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Break room with 900 participants


Good morning.
I've just bought "Large rooms - 1000" and tomorrow I'm having an event for 900 participants. I've read that I'll only be able to allocate 200 in the breakout rooms, how do I change that option? I want to create 50 breakout rooms with 18 participants in each.
Thank you very much.


Community Champion | Customer
Community Champion | Customer



There are limitations to breakout rooms .


Up to 100 breakout rooms and up to 1000 participants can be pre-assigned to breakout rooms.  

Number of breakout roomsMaximum number of participants who can be assigned to breakout rooms*
20 breakout roomsUp to 500 participants
30 breakout roomsUp to 400 participants
50 breakout roomsUp 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. 





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Thanks for the reply, but I'm still confused.

I know I can "pre-assign" participants, but I would like to assign 900 participants in the rooms after the meeting has already started. Or rather, I want to click on the option to open 50 breakout rooms and have the 900 participants distributed in the rooms.
Last year I know I had to ask support to enable the "Breakout Room 100" option, but I haven't found any more articles talking about it.

I'm worried because the event is tomorrow.
Thank you.

Community Champion | Customer
Community Champion | Customer

Welcome to the Zoom Community, @Destrava.


I think you'll be fine.  The article says you can create up to 100 breakout rooms, so if you want to open 50, with 900 people in main room and allowing Zoom to assign people randomly to rooms, it should perform that correctly. 


Note that there always seems to be a few people who don't get assigned to a room.  My experience is that these are people who fail to click OK to a pop-up asking them to approve being moved into a Breakout Room.  You might have to move a couple of people manually.


Do you need names for these breakout rooms, or does "Room 1", "Room 2", etc, work for your needs?

Ray - / aka "Old Desert Lizard"
Please mark this post Accepted if it helped you !

Community Champion | Customer
Community Champion | Customer

One other thing to be aware of us that all of the participants will need to be using the minimum globally supported version ofZoom (5.12.2) or they may be asked to update their Zoom client.


More details here: 



If my reply helped, don't forget to click the accept as solution button!