I currently have the supporter plugin set up with my multisite. I offer a free membership and a supporter membership where the supporters get access to premium themes, plugins, and disk space. Is there anyway I can integrate the membership program to charge an additional fee for access to one specific plugin? I want to make it an additional feature to add the BuddyPress Courseware functionality as most users would not need this even if they were supporters. Is this possible? Thank you for the help.