Before, CLAS is limited for use by Shibboleth ID Providers (such as users internal to UBC) only. External users such as guest advisors, students, or the general public cannot easily be provisioned access to CLAS.
It is now possible for guest users to create an account in CLAS. Guest users can be in a course along with Shibboleth users, and can even be provisioned as Instructors and TA's.
Shibboleth and Guest users in CLAS, and other future user types, will have more or less equivalent functionality.
Upload quota is defined by role and instance (department).
Quota applies to both uploads and webcam recordings, with a "grace buffer", that is you are allowed to go over quota for ONE last file, so that recordings won't fail in the middle
Quota is recorded by the original uploader of the files, so even if multiple course owners (instructors and TA's) can delete a video that may have been uploaded by another user, the quota is always credited back to the original uploader, ensuring fairness.