Pre-assign half of participants for breakout sessions, let the other half decide spontaneously

[lesora]

Hi there,

I have a large meeting coming up tomorrow and the participants were required to register and also tell me which breakout session they want to attend. Of course, only half of them gave me the information on the breakout session. Is ist possible that I pre-assign those who did let me know while the others can choose a breakout session spontaneously and on their own?

I test-tried it but the participant who was not pre-assigned was just staying in the main session without any option to enter a breakout session.

Any ideas?

Best regards!