As a content admin, I want a checkbox for regions to select when entering places so that these entries have a different icon and signal to public users that it's a different type of place.

[kseniaryzhova]

Describe the solution you'd like
When entering places, I want a checkbox for regions so when clicked, it will generate a different icon on the map. This should not affect filtering or sorting at this point.

We also want the following help text: “Please restrict entries to regions explicitly mentioned in documents.”