There are three main roles within a Class Collaborate session:
Participant: By default, Students will have this role, which has access to chat, use audio/video (if Instructor enables this privilege), and draw on the Whiteboard/Shared Files (if Instructor enables this privilege).
Presenter: By default, no one has this role. Instructors may upgrade a Participants role to Presenter. As a Presenter, you have access to all the same privileges as a Participant and access to Share Content (i.e. Whiteboard, Application Sharing, and Share Files).
Moderator: By default, only Instructors have access to this role. Moderators have full privileges to the session.
Open the Class Collaborate Roles web tutorial to learn more.