Here is a BlueJeans instruction video for Breakout Rooms:
https://support.bluejeans.com/s/article/Video-Breakout-Sessions NOTE: The user has to have moderator access to control breakout sessions.
Sometimes there can be a delay getting everyone into a room, so be patient. It has happened where someone’s audio quit working when moved into the session. Have them leave the session (not the main meeting), then put them back in and it should pick up audio again.