There are many reasons why you might wish to remove an attendee or speaker from a live session. These range from the more serious - say if an attendee is engaging in abusive or inappropriate behavior - to the more practical; for example a speaker might be experiencing technical issues and be unable to leave the stage themselves.
Removing someone from the Stage
During a live session, you may notice a small icon at the top right of each speaker's video feed, which looks like this:
Clicking this icon will remove a speaker from the Stage. Note that they will remain in the session as a viewer. They can rejoin the Stage by clicking the "Go on Stage" button.