Yes, you can limit the locations displayed on the map.

Block Editor / Elementor

You can narrow down the visible locations by IDs or Marker Categories in the Block Settings:

Shortcode

You can narrow down the visible locations by IDs or Marker Categories with additional Shortcode attributes:

[open-user-map ids="1|2|3"]

OR

[open-user-map types="food|drinks"]

The ids are the post ids of the locations. And the types are the Marker Categories.

Separate multiple items with a pipe symbol.