If a attendee accidently have cancelled their invitation to a meeting or can join the meeting afterall, you have the possibility to change their cancellation.
HOW TO CHANGE A USER'S CANCELLATION
- Click on Meetings in the left side menu and find the meeting, where the user by accident has cancelled their invitation.
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- Click on the three dots to the right of the user
- Next, click Rejoin meeting
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Now the user will once again be visible as an attendee and not absent.