You can check the article below.
If you want to increase your credit limit, please see the Note.
Please make a request to CSM.
Managing Breakout Rooms – Zoom Help Center
These numbers only apply to breakout rooms created during a meeting. Up to 200 participants can be pre-assigned to breakout rooms.
| Number of breakout rooms | Maximum number of participants who can be assigned to breakout rooms* |
| 20 breakout rooms | Up to 500 participants |
| 30 breakout rooms | Up to 400 participants |
| 50 breakout rooms | Up to 200 participants |
*The maximum capacities listed require a Large Meeting add-on. If you do not have a Large Meeting add-on, the maximum number of participants is limited by your meeting capacity.
Note: Zoom Support can increase the maximum capacity of your account's Breakout Rooms to allow up to 100 breakout rooms, with a maximum capacity of 1000 per breakout room (depending on account limits). This requires ALL participants to be on Zoom client version 5.2 or higher - anyone joining a meeting on your account who does not have Zoom client version 5.2 or higher will be required to update to join the meeting. If your users do not have administrative control of their computers, this will require assistance from your IT Department to update the client.