Control which WP roles are allowed to be passed to Buddypress?

I am trying to configure an e-commerce/Buddypress site where a few product types are sold. I want to have the regular customers be able to login and have their accounts with past purchases, etc. These are being assigned a role of "customer". However, certain products are subscriptions to certifications in which they are asissigned the role of "member" and they can fill out their Buddypress profile and get listed in the member directory. The problem is I don't want every customer getting a profile, only the certified instructors. Is there a way to only pass certain roles to Buddypress?