The co-host feature allows you to share hosting privileges with another user in a meeting. This can be useful to allow another user to manage the administrative side of the meeting, such as muting participants or starting/stopping the recording. Co-hosts are assigned during a meeting and cannot start a meeting.
There are two ways that you can make a user a co-host.
In the meeting, the host hovers over the user's video, clicks on the three dots and chooses Make Co-Host.