BuddyPress Group VS Event+, need RSVP function...

Hi,

I installed BuddyPress Group Cal plug-in. I only need the function of creating buddypress group cal and I assumed this plug-in is lighter weight and less resource intensive compared to Event+. But BuddyPress Group Cal can not let group member RSVP...

So I look into Event+. Can Event+ use as BuddyPress Group Cal? Like add group event tab on Buddypress section, BuddyPress widget to show group member upcoming event (but not to other users) ?