Access to private community only for booked profiles.

I'm interested in knowing if what I want to do is possible. I haven't been able to do it yet, but it might be that I'm making a mistake and not being able to do it. I have almost the entire Fluent ecosystem. I want to do something that would integrate booking with CRM and community, so that if someone has an active appointment scheduled with me, they have access to my private community. For example, if someone has already booked an appointment with me, they immediately have access to the private community, and as they rebook from that same appointment, they continue to receive updates as long as they have an appointment scheduled. If at any point they cancel or don't schedule any more appointments, they would lose access to the community, unless they pay for a separate monthly subscription at a lower price.