BuddyPress.org

No… the themes go in /themes… but perhaps if you’re using bp-default as a parent and activating the child… you could leave bp-default anywhere. Not sure. Never tried it. I just put all my themes in “/themes”.

Anyway. It’s really simple. Just make a new folder inside /themes and put a CSS file in there with the line “Template: bp-default”. Done. You now have a child theme. It doesn’t really do anything until to start adding overriding styles and templates… but you now had a child theme.