@ mention in comments require better filter options on the user

Need some improvements made to the @ Mention settings in the comments block. I only want user to be able to @mention people who are assigned to the current project but there is currently no way of doing this. The variable only allows me to link to filter on the mentioner not the current record.

An example of this is, I have an ‘Action Details’ page where I have added the comments block and each action has a related record back to the project the action is for. In the users table I define which projects users have access to so I only want people to @ mention other who are working on the same project.

Without this functionality, I can’t use the @ mention option as it compromises GDPR compliance with clients being able to see other clients names.