Breakout Rooms

If I am a co-host and have set up and started the breakout rooms.  If I leave the meeting, will the breakout rooms stay open and the host will have control of them?  I understand the difference between the host and co-host and someone always needing to be the host.  I just need to know what happens with breakout rooms if the co-host that set them them up leaves the meeting.  Thank you.