creating a shared page for 2 or more people using buddypress and gravity forms

I have just built some complex gravity forms that gather info from a user about a "challenge" we want them to set and achieve. We need the gravity form upon completion to create a buddypress account page (which I think we have figured out) and then in my gravity form confirmation page, I need that buddypress account page link to be included. And for that user, we have created a custom challenge page and we want the buddypress account features to be included in that page. You see the user also invites a friend to keep them accountable and that friend needs to have access to that challenge page. Is there any way to use the buddypress account page as our challenge page and give multiple people access to it other than the primary user?

I enabled support access to my site.