BuddyPress.org

Read up on this:

https://codex.buddypress.org/how-to-guides/modifying-the-buddypress-admin-bar/

There’s also a plugin that makes it easier to modify the admin bar:

https://wordpress.org/extend/plugins/buddypress-admin-bar-mods/

I haven’t tried it, but give it a shot and let us know what you think of it!