BuddyPress.org

Alright, you just add a do_action call (like above) to one of the extensions and then attach a function to that action, like so: `add_action( ‘this_is_some_hook’, ‘your_function_name’ )`. You’ll also have to provide hooks in the functions where the data gets saved and hook into those to save the extra groupmeta. The WP codex has lots of info on actions and filters and is a good place to start.