Can Buddypress do this?

Hi, I am looking for a way to get subscribers approved by subsites before they can see a subsites' Marketpress store. I have tried Membership plugin off and on over the past year and am close to giving up on it for this purpose... so please don't suggest it

Okay.... here is the question...
Can Buddypress somehow restrict access to content on subsites until admins accept friendship requests from subscribers? Or is this not really a Buddypress function?