Allow Users to Modify Some Values of Assigned WordPress Pods [closed]

You can use map_meta_cap() to set more specific capabilities for your CPT. So instead of using the built-in edit_posts and edit_others_posts capabilities you would create edit_locations and edit_others_locations – thus allowing a new custom role to edit their own locations, but not edit_others_locations. You may find this related question helpful: Using Custom Meta Capabilities on Custom Post Type