BuddyPress.org

BP has a large number of files that can be overloaded by copying them to your child-theme directory, these are located in plugins/buddypress/bp-nouveau (or bp-legacy) /buddypress for one off builds it’s usually easiest to overload the template file you require. If the solution needs to be re-useable then it’s better to build a plugin and use filter and action hooks. Also some things you can’t do with Template files alone.