Add Usermeta data

Good day,

I have a bunch of user meta data that I would like to be able to search by.

How do I get meta keys to show up on the form fields?

Currently there are first_name, last_name … and a few BuddyPress related fields such as total_friend_count etc. as options under “Usermeta data”.

I need some of my own custom user meta keys to show up on the options and filter by them.

Kind regards