Actually the folks over at BuddyPress are quite expert; sometimes you need to be patient though, to give the right person a chance to find and help you. In the meantime, start going through these pages to get an idea of how to go about getting your site to do what you want. Hope it helps.
https://codex.buddypress.org/themes/theme-compatibility-1-7/a-quick-look-at-1-7-theme-compatibility/
https://codex.buddypress.org/themes/theme-compatibility-1-7/template-hierarchy/