The moderator can lock the conference to prevent new participants from joining the call. However, the moderator can continue to add participants to the conference.
Procedure
On the Conference screen, do one of the following:
On mobile and desktop clients: Select .
On desktop clients: Select .
Do one of the following:
On mobile clients: Select .
On desktop clients: Select Meeting Controls.
To toggle the Lock Meeting feature on and off, select Lock Meeting.