To mute all participants in the meeting, open the Participants panel and then click Participant Actions. Select Mute Audience. All attendees’ lines in the meeting are muted.
Note: Any phone attendee can press *6 to mute or unmute their own line.
When you select Participant Actions ▶ Unmute Audience, all phone attendees are automatically unmuted; attendees using computer audio are shown a message that a presenter unmuted the call. Those attendees can also unmute themselves using their own participant controls.