If you chose Automatically, participants will already be assigned to different breakout rooms.
Click the Breakout rooms
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Expand the list under Assign participants.
Hover over participant names until checkboxes appear. Choose participants by selecting clicking the checkboxes.Select More options … and choose
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Click on the ellipsis … next to the participant’s name and click a room from the list.
Repeat this process until all participants have been assigned to rooms.
To view the participants assigned to a Breakout Room, expand the arrow next to the room's name.