Group-specific Activity feed on individual sub-sites in a multisite

hey. I've got BuddyPress installed in my multisite. This is the regular Activity feed:

http://mythica.intothemythica.com/activity/

My BuddyPress is store on Mythica. However, I would like to show an Activity feed on one or more of the sub-sites; and I want it to be an Activity feed from only specific Users.

So, let's say i've got a Page on my http://www.academy.intothemythica.com website; which is the scholastic portion of the Into the Mythica ecosystem.

I want that Page to show ONLY the Activity feed posts from beings in a learning environment; so they focus their social activity on the Academy Activity page and not the main Mythica Activity page.

Essentially, I want a custom Activity feed page on the Academy site.

How is this accomplished?