diff --git a/README.md b/README.md
index bf26740..f231b0f 100644
--- a/README.md
+++ b/README.md
@@ -92,7 +92,41 @@ Setting the value of this field to "Yes" will show the field group in the WPGrap
 
 ##### Registering Fields in PHP
 
-When registering ACF Fields in PHP, `@todo`
+When registering ACF Fields in PHP, you need to add `show_in_graphql` and `graphql_field_name` when defining your field group.  See below as an example.
+
+```
+function my_acf_add_local_field_groups() {
+	
+	acf_add_local_field_group(array(
+		'key' => 'group_1',
+        'title' => 'My Group',
+        'show_in_graphql' => true,
+        'graphql_field_name' => 'myGroup',
+		'fields' => array (
+			array (
+				'key' => 'field_1',
+				'label' => 'Sub Title',
+				'name' => 'sub_title',
+				'type' => 'text',
+			)
+		),
+		'location' => array (
+			array (
+				array (
+					'param' => 'post_type',
+					'operator' => '==',
+					'value' => 'post',
+				),
+			),
+		),
+	));
+	
+}
+
+add_action('acf/init', 'my_acf_add_local_field_groups');
+```
+
+Each individual field will inherit its GraphQL name from the supplied `name` tag. In this example, `sub_title` will become `subTitle` when requested through GraphQL. If you want more granular control, you can pass `graphql_field_name` to each individual field as well.
 
 ## Supported Fields
 
diff --git a/src/class-config.php b/src/class-config.php
index d13003c..eeaa1a3 100644
--- a/src/class-config.php
+++ b/src/class-config.php
@@ -1458,7 +1458,7 @@ protected function add_acf_fields_to_graphql_types() {
 			 * to graphql
 			 */
 			if ( ! $this->should_field_group_show_in_graphql( $field_group ) ) {
-				return;
+				continue;
 			}
 
 			$graphql_types = array_unique( $field_group['graphql_types'] );
diff --git a/tests/wpunit/LocationRulesTest.php b/tests/wpunit/LocationRulesTest.php
index 0578cde..5b1f155 100644
--- a/tests/wpunit/LocationRulesTest.php
+++ b/tests/wpunit/LocationRulesTest.php
@@ -671,4 +671,99 @@ public function testFieldGroupAssignedToAcfOptionsPageShowsInSchema() {
 
 	}
 
+	/**
+	 * @see: https://github.com/wp-graphql/wp-graphql-acf/issues/251
+	 * @throws Exception
+	 */
+	public function testOnlyFieldGroupsSetToShowInGraphqlAreInTheSchema() {
+
+		$post_id = $this->factory()->post->create([ 'post_status' => 'publish' ]);
+
+		/**
+		 * Register a field group to a specific post type
+		 */
+		$this->register_acf_field_group([
+			'key' => 'doNotShowInGraphQL',
+			'location'              => [
+				[
+					[
+						'param'    => 'post_type',
+						'operator' => '==',
+						'value'    => 'post',
+					],
+				],
+			],
+			'show_in_graphql'       => false,
+			'graphql_field_name'    => 'doNotShowInGraphQL',
+			'graphql_types'         => [ 'Post' ]
+		]);
+
+		$this->register_acf_field_group([
+			'key' => 'showInGraphqlTest',
+			'location'              => [
+				[
+					[
+						'param'    => 'post_type',
+						'operator' => '==',
+						'value'    => 'post',
+					],
+				],
+			],
+			'show_in_graphql'       => true,
+			'graphql_field_name'    => 'showInGraphqlTest',
+			'graphql_types'         => [ 'Post' ]
+		]);
+
+		$query = '
+		query GetPost($id:ID!) {
+		  post(id:$id idType:DATABASE_ID) {
+		    databaseId
+		    doNotShowInGraphQL {
+		      __typename
+		    }
+		  }
+		}
+		';
+
+		$actual = graphql([
+			'query' => $query,
+			'variables' => [
+				'id' => $post_id,
+			],
+		]);
+
+		codecept_debug( $actual );
+
+		// doNotShowInGraphQL should not be in the Schema, so this should be an error
+		$this->assertArrayHasKey( 'errors', $actual );
+
+		$query = '
+		query GetPost($id:ID!) {
+		  post(id:$id idType:DATABASE_ID) {
+		    databaseId
+		    showInGraphqlTest {
+		      __typename
+		    }
+		  }
+		}
+		';
+
+		$actual = graphql([
+			'query' => $query,
+			'variables' => [
+				'id' => $post_id,
+			],
+		]);
+
+		codecept_debug( $actual );
+
+		// showInGraphqlTest should be queryable against the Post type in the Schema
+		$this->assertSame( $post_id, $actual['data']['post']['databaseId'] );
+		$this->assertSame( 'Post_Showingraphqltest', $actual['data']['post']['showInGraphqlTest']['__typename'] );
+
+		acf_remove_local_field_group( 'doNotShowInGraphQL' );
+		acf_remove_local_field_group( 'showInGraphqlTest' );
+
+	}
+
 }