Enable Backup Instructors & Assistants to see their assigned classes & rosters on their Class Manager Profile

Currently only Class Instructors & Co-Teachers can see the classes they are assigned to and their rosters on their Class Manager profile. If a class has more than 2 instructors, they can be listed as "backup instructors" or "assistants" but they are unable to be linked to that class on their Class Manager and therefore cannot use it.