Tutorial: How to mute participants in Microsoft Teams .
To prevent disruptions to meetings, whether intentional or accidental, as a meeting organizer you have the option of muting, "Muting," individual participants or all participants in the meeting.
If a participant does not leave their microphone muted while they are away, you can easily mute that participant via the pane.
During large meetings led by designated speakers, such as a town hall or lecture, the ability to mute all attendees ensures that your presenters are not inadvertently disturbed.
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