diff --git a/classes/local/form/form_step_instance.php b/classes/local/form/form_step_instance.php
index f080413d..8b5503ec 100644
--- a/classes/local/form/form_step_instance.php
+++ b/classes/local/form/form_step_instance.php
@@ -161,8 +161,11 @@ public function definition_after_data() {
             $mform->setDefault('id', '');
             $subpluginname = $this->subpluginname;
         }
-        $mform->setDefault('subpluginnamestatic',
-            get_string('pluginname', 'lifecyclestep_' . $subpluginname));
+
+        if (isset($this->lib)) {
+            $mform->setDefault('subpluginnamestatic', $this->lib->get_plugin_description());
+        }
+
         $mform->setDefault('subpluginname', $subpluginname);
 
         // Setting the default values for the local step settings.
diff --git a/classes/local/form/form_trigger_instance.php b/classes/local/form/form_trigger_instance.php
index 0ac8f901..353dbae0 100644
--- a/classes/local/form/form_trigger_instance.php
+++ b/classes/local/form/form_trigger_instance.php
@@ -162,8 +162,11 @@ public function definition_after_data() {
             $mform->setDefault('id', $this->trigger->id);
             $mform->setDefault('instancename', $this->trigger->instancename);
         }
-        $mform->setDefault('subpluginnamestatic',
-            get_string('pluginname', 'lifecycletrigger_' . $this->subpluginname));
+
+        if (isset($this->lib)) {
+            $mform->setDefault('subpluginnamestatic', $this->lib->get_plugin_description());
+        }
+
         $mform->setDefault('subpluginname', $this->subpluginname);
 
         // Setting the default values for the local trigger settings.
diff --git a/classes/local/manager/lib_manager.php b/classes/local/manager/lib_manager.php
index afd381ee..22861672 100644
--- a/classes/local/manager/lib_manager.php
+++ b/classes/local/manager/lib_manager.php
@@ -102,18 +102,27 @@ public static function get_step_interactionlib($subpluginname) {
      * @return null|base|libbase
      */
     private static function get_lib($subpluginname, $subplugintype, $libsubtype = '') {
+        // Plugins defined in subplugins.json file.
         $triggerlist = \core_component::get_plugin_list('lifecycle' . $subplugintype);
-        if (!array_key_exists($subpluginname, $triggerlist)) {
-            return null;
-        }
-        $filename = $triggerlist[$subpluginname].'/'.$libsubtype.'lib.php';
-        if (file_exists($filename)) {
-            require_once($filename);
-            $extendedclass = "tool_lifecycle\\$subplugintype\\$libsubtype$subpluginname";
-            if (class_exists($extendedclass)) {
-                return new $extendedclass();
+        if (array_key_exists($subpluginname, $triggerlist)) {
+            $filename = $triggerlist[$subpluginname].'/'.$libsubtype.'lib.php';
+            if (file_exists($filename)) {
+                require_once($filename);
+                $extendedclass = "tool_lifecycle\\$subplugintype\\$libsubtype$subpluginname";
+                if (class_exists($extendedclass)) {
+                    return new $extendedclass();
+                }
             }
         }
+
+        // Plugins defined under "lifecycle" name space.
+        // The base class has already been checked by get_trigger_types or get_steps_types.
+        $classname = !$libsubtype ? $subplugintype : $libsubtype;
+        $classname = "$subpluginname\\lifecycle\\$classname";
+        if (class_exists($classname)) {
+            return new $classname();
+        }
+
         return null;
     }
 }
diff --git a/classes/local/manager/step_manager.php b/classes/local/manager/step_manager.php
index cd58d1a5..6c6b3478 100644
--- a/classes/local/manager/step_manager.php
+++ b/classes/local/manager/step_manager.php
@@ -228,11 +228,27 @@ public static function get_step_instances_by_subpluginname($subpluginname) {
      * @throws \coding_exception
      */
     public static function get_step_types() {
+        // Sub plugins in 'step' folder.
         $subplugins = \core_component::get_plugin_list('lifecyclestep');
         $result = array();
         foreach (array_keys($subplugins) as $plugin) {
             $result[$plugin] = get_string('pluginname', 'lifecyclestep_' . $plugin);
         }
+
+        // Additional sub plugins defined under "lifecycle" name space, ie "local_newstep\lifecycle".
+        // The class name must be step (step.php) and placed under "classes/lifecycle" folder.
+        // The name space must be "local_newstep\lifecycle"
+        // The "local_newstep\lifecycle\step" class must extend the step base classes.
+        foreach (array_keys(\core_component::get_plugin_types()) as $plugintype) {
+            $potentialsteps = \core_component::get_plugin_list_with_class($plugintype, 'lifecycle\\step');
+            foreach ($potentialsteps as $plugin => $potentialstep) {
+                // Check if it implements the step base class.
+                if (is_a($potentialstep, \tool_lifecycle\step\libbase::class, true)) {
+                    $result[$plugin] = get_string('pluginname', $plugin);
+                }
+            }
+        }
+
         return $result;
     }
 
diff --git a/classes/local/manager/trigger_manager.php b/classes/local/manager/trigger_manager.php
index dc33b086..9151ef84 100644
--- a/classes/local/manager/trigger_manager.php
+++ b/classes/local/manager/trigger_manager.php
@@ -241,6 +241,21 @@ public static function get_trigger_types() {
         foreach (array_keys($subplugins) as $plugin) {
             $result[$plugin] = get_string('pluginname', 'lifecycletrigger_' . $plugin);
         }
+
+        // Additional sub plugins defined under "lifecycle" name space, ie "local_newtrigger\lifecycle".
+        // The class name must be trigger (trigger.php) and placed under "classes/lifecycle" folder.
+        // The name space must be "local_newtrigger\lifecycle"
+        // The "local_newtrigger\lifecycle\trigger" class must extend the trigger base classes (base_automatic or base_manual).
+        foreach (array_keys(\core_component::get_plugin_types()) as $plugintype) {
+            $potentialtriggers = \core_component::get_plugin_list_with_class($plugintype, 'lifecycle\\trigger');
+            foreach ($potentialtriggers as $plugin => $potentialtrigger) {
+                // Check if it implements the trigger base class.
+                if (is_a($potentialtrigger, \tool_lifecycle\trigger\base::class, true)) {
+                    $result[$plugin] = get_string('pluginname', $plugin);
+                }
+            }
+        }
+
         return $result;
     }
 
diff --git a/step/lib.php b/step/lib.php
index 7209d1d3..b2ab6a79 100644
--- a/step/lib.php
+++ b/step/lib.php
@@ -142,6 +142,16 @@ public function extend_add_instance_form_definition_after_data($mform, $settings
     public function abort_course($process) {
     }
 
+    /**
+     * Define description of the step.
+     * Allow subplugins to have custom description.
+     *
+     * @return string description of the trigger.
+     */
+    public function get_plugin_description() {
+        return get_string("pluginname", "lifecyclestep_" . $this->get_subpluginname());
+    }
+
 }
 
 /**
diff --git a/tests/fixtures/fakeplugins/samplestep/classes/lifecycle/interaction.php b/tests/fixtures/fakeplugins/samplestep/classes/lifecycle/interaction.php
new file mode 100644
index 00000000..ac126624
--- /dev/null
+++ b/tests/fixtures/fakeplugins/samplestep/classes/lifecycle/interaction.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace tool_samplestep\lifecycle;
+
+global $CFG;
+require_once($CFG->dirroot . '/admin/tool/lifecycle/step/interactionlib.php');
+
+use tool_lifecycle\step\interactionlibbase;
+
+defined('MOODLE_INTERNAL') || die();
+
+class interaction extends interactionlibbase {
+
+    public function get_relevant_capability()
+    {
+    }
+
+    public function get_action_tools($process)
+    {
+    }
+
+    public function get_status_message($process)
+    {
+    }
+
+    public function get_action_string($action, $user)
+    {
+    }
+
+    public function handle_interaction($process, $step, $action = 'default')
+    {
+    }
+}
diff --git a/tests/fixtures/fakeplugins/samplestep/classes/lifecycle/step.php b/tests/fixtures/fakeplugins/samplestep/classes/lifecycle/step.php
new file mode 100644
index 00000000..7fdc574e
--- /dev/null
+++ b/tests/fixtures/fakeplugins/samplestep/classes/lifecycle/step.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace tool_samplestep\lifecycle;
+
+global $CFG;
+require_once($CFG->dirroot . '/admin/tool/lifecycle/step/lib.php');
+
+use tool_lifecycle\step\libbase;
+
+defined('MOODLE_INTERNAL') || die();
+
+class step extends libbase {
+    public function get_subpluginname()
+    {
+        return 'sample step';
+    }
+
+    public function get_plugin_description() {
+        return "Sample step plugin";
+    }
+
+    public function process_course($processid, $instanceid, $course)
+    {
+        return null;
+    }
+
+}
diff --git a/tests/fixtures/fakeplugins/samplestep/classes/privacy/provider.php b/tests/fixtures/fakeplugins/samplestep/classes/privacy/provider.php
new file mode 100644
index 00000000..de402f95
--- /dev/null
+++ b/tests/fixtures/fakeplugins/samplestep/classes/privacy/provider.php
@@ -0,0 +1,38 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+namespace tool_samplestep\privacy;
+
+use core_privacy\local\metadata\null_provider;
+
+/**
+ * Privacy subsystem implementation for tool_samplestep.
+ *
+ * @package     tool_samplestep
+ * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class provider implements null_provider {
+
+    /**
+     * Get the language string identifier with the component's language
+     * file to explain why this plugin stores no data.
+     *
+     * @return string the reason
+     */
+    public static function get_reason() : string {
+        return 'privacy:metadata';
+    }
+}
diff --git a/tests/fixtures/fakeplugins/samplestep/lang/en/tool_samplestep.php b/tests/fixtures/fakeplugins/samplestep/lang/en/tool_samplestep.php
new file mode 100644
index 00000000..cbd7087c
--- /dev/null
+++ b/tests/fixtures/fakeplugins/samplestep/lang/en/tool_samplestep.php
@@ -0,0 +1,18 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+$string['pluginname'] = 'Sample step';
+$string['privacy:metadata'] = 'The plugin does not store any personal data.';
diff --git a/tests/fixtures/fakeplugins/samplestep/version.php b/tests/fixtures/fakeplugins/samplestep/version.php
new file mode 100644
index 00000000..440d216e
--- /dev/null
+++ b/tests/fixtures/fakeplugins/samplestep/version.php
@@ -0,0 +1,28 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Fake component for testing
+ *
+ * @package    core
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+$plugin->version   = 2023100400;
+$plugin->requires  = 2022041200;
+$plugin->component = 'tool_samplestep';
diff --git a/tests/fixtures/fakeplugins/sampletrigger/classes/lifecycle/trigger.php b/tests/fixtures/fakeplugins/sampletrigger/classes/lifecycle/trigger.php
new file mode 100644
index 00000000..6ec21230
--- /dev/null
+++ b/tests/fixtures/fakeplugins/sampletrigger/classes/lifecycle/trigger.php
@@ -0,0 +1,28 @@
+<?php
+
+namespace tool_sampletrigger\lifecycle;
+
+global $CFG;
+require_once($CFG->dirroot . '/admin/tool/lifecycle/trigger/lib.php');
+
+use tool_lifecycle\trigger\base_automatic;
+
+defined('MOODLE_INTERNAL') || die();
+
+class trigger extends base_automatic {
+
+    public function get_subpluginname()
+    {
+        return 'sample trigger';
+    }
+
+    public function get_plugin_description() {
+        return "Sample trigger";
+    }
+
+    public function check_course($course, $triggerid)
+    {
+        return null;
+    }
+
+}
diff --git a/tests/fixtures/fakeplugins/sampletrigger/classes/privacy/provider.php b/tests/fixtures/fakeplugins/sampletrigger/classes/privacy/provider.php
new file mode 100644
index 00000000..8ba4c99f
--- /dev/null
+++ b/tests/fixtures/fakeplugins/sampletrigger/classes/privacy/provider.php
@@ -0,0 +1,38 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+namespace tool_sampletrigger\privacy;
+
+use core_privacy\local\metadata\null_provider;
+
+/**
+ * Privacy subsystem implementation for tool_sampletrigger.
+ *
+ * @package     tool_sampletrigger
+ * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class provider implements null_provider {
+
+    /**
+     * Get the language string identifier with the component's language
+     * file to explain why this plugin stores no data.
+     *
+     * @return string the reason
+     */
+    public static function get_reason() : string {
+        return 'privacy:metadata';
+    }
+}
diff --git a/tests/fixtures/fakeplugins/sampletrigger/lang/en/tool_sampletrigger.php b/tests/fixtures/fakeplugins/sampletrigger/lang/en/tool_sampletrigger.php
new file mode 100644
index 00000000..ed3104d6
--- /dev/null
+++ b/tests/fixtures/fakeplugins/sampletrigger/lang/en/tool_sampletrigger.php
@@ -0,0 +1,18 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+$string['pluginname'] = 'Sample trigger';
+$string['privacy:metadata'] = 'The plugin does not store any personal data.';
diff --git a/tests/fixtures/fakeplugins/sampletrigger/version.php b/tests/fixtures/fakeplugins/sampletrigger/version.php
new file mode 100644
index 00000000..38a6277f
--- /dev/null
+++ b/tests/fixtures/fakeplugins/sampletrigger/version.php
@@ -0,0 +1,28 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Fake component for testing
+ *
+ * @package    core
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+$plugin->version   = 2023100400;
+$plugin->requires  = 2022041200;
+$plugin->component = 'tool_sampletrigger';
diff --git a/tests/subplugin_test.php b/tests/subplugin_test.php
new file mode 100644
index 00000000..338931b9
--- /dev/null
+++ b/tests/subplugin_test.php
@@ -0,0 +1,116 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+defined('MOODLE_INTERNAL') || die();
+
+global $CFG;
+require_once($CFG->libdir.'/upgradelib.php');
+
+use tool_lifecycle\local\manager\lib_manager;
+use tool_lifecycle\local\manager\step_manager;
+use tool_lifecycle\local\manager\trigger_manager;
+
+
+class subplugin_test extends \advanced_testcase {
+
+    public function test_builtin_triggers() {
+        $this->resetAfterTest();
+        $builtintriggers = \core_component::get_plugin_list('lifecycletrigger');
+        $triggers = trigger_manager::get_trigger_types();
+
+        // All builtin triggers are also in the list of triggers.
+        $this->assertEmpty(array_diff_key($builtintriggers, $triggers));
+
+        // Trigger classes are loadable.
+        foreach ($builtintriggers as $triggername => $triggerpath) {
+            $this->assertNotEmpty(lib_manager::get_trigger_lib($triggername));
+        }
+    }
+
+    public function test_builtin_steps() {
+        $this->resetAfterTest();
+        $builtinsteps = \core_component::get_plugin_list('lifecyclestep');
+        $steps = step_manager::get_step_types();
+
+        // All builtin steps are also in the list of steps.
+        $this->assertEmpty(array_diff_key($builtinsteps, $steps));
+
+        // Step classes are loadable.
+        foreach ($builtinsteps as $stepname => $steppath) {
+            $this->assertNotEmpty(lib_manager::get_step_lib($stepname));
+        }
+    }
+
+    public function test_additional_triggers() {
+        $this->resetAfterTest();
+
+        // Add a fake tool plugin, which define a trigger.
+        $mockedcomponent = new ReflectionClass(\core_component::class);
+        $mockedplugins = $mockedcomponent->getProperty('plugins');
+        $mockedplugins->setAccessible(true);
+        $plugins = $mockedplugins->getValue();
+        $plugins['tool'] += ['sampletrigger' => __DIR__ . '/fixtures/fakeplugins/sampletrigger'];
+        $mockedplugins->setValue($plugins);
+
+        // The 'fixture' is not autoloaded, so we need to require it.
+        require_once(__DIR__ . '/fixtures/fakeplugins/sampletrigger/classes//lifecycle/trigger.php');
+
+        // Check if the trigger is available.
+        $triggers = trigger_manager::get_trigger_types();
+        $this->assertArrayHasKey('tool_sampletrigger', $triggers);
+
+        // Lib is loadable.
+        $this->assertInstanceOf('tool_sampletrigger\lifecycle\trigger',
+            lib_manager::get_trigger_lib('tool_sampletrigger'));
+
+        // Unset the fake plugin.
+        unset($plugins['tool']['sampletrigger']);
+        $mockedplugins->setValue($plugins);
+    }
+
+    public function test_additional_steps() {
+        $this->resetAfterTest();
+
+        // Add a fake tool plugin, which define a step.
+        $mockedcomponent = new ReflectionClass(\core_component::class);
+        $mockedplugins = $mockedcomponent->getProperty('plugins');
+        $mockedplugins->setAccessible(true);
+        $plugins = $mockedplugins->getValue();
+        $plugins['tool'] += ['samplestep' => __DIR__ . '/fixtures/fakeplugins/samplestep'];
+        $mockedplugins->setValue($plugins);
+
+        // The 'fixture'  is not autoloaded, so we need to require it.
+        require_once(__DIR__ . '/fixtures/fakeplugins/samplestep/classes//lifecycle/step.php');
+        require_once(__DIR__ . '/fixtures/fakeplugins/samplestep/classes//lifecycle/interaction.php');
+
+        // Check if the step is available.
+        $steps = step_manager::get_step_types();
+        $this->assertArrayHasKey('tool_samplestep', $steps);
+
+        // Lib is loadable.
+        $this->assertInstanceOf('tool_samplestep\lifecycle\step',
+            lib_manager::get_step_lib('tool_samplestep'));
+
+        // Lib subtype is loadable.
+        $this->assertInstanceOf('tool_samplestep\lifecycle\interaction',
+            lib_manager::get_step_interactionlib('tool_samplestep'));
+
+        // Unset the fake plugin.
+        unset($plugins['tool']['samplestep']);
+        $mockedplugins->setValue($plugins);
+    }
+
+}
diff --git a/trigger/lib.php b/trigger/lib.php
index 3c01ffb7..df7cb0e0 100644
--- a/trigger/lib.php
+++ b/trigger/lib.php
@@ -115,6 +115,16 @@ public function get_status_message() {
         return get_string("workflow_started", "tool_lifecycle");
     }
 
+    /**
+     * Define description of the trigger.
+     * Allow subplugins to have custom description.
+     *
+     * @return string description of the trigger.
+     */
+    public function get_plugin_description() {
+        return get_string("pluginname", "lifecycletrigger_" . $this->get_subpluginname());
+    }
+
 }
 
 /**