Foster connections and meaningful discussions in medium to large Teams meetings by creating breakout rooms. Create and manage breakout rooms when you use Teams for desktop to organize a meeting with up to 300 people.
See the full Microsoft support article on managing breakout rooms in MS Teams: https://support.microsoft.com/en-us/office/manage-breakout-rooms-in-microsoft-teams-7de1f48a-da07-466c-a5ab-4ebace28e461
Or watch this video primer:
To learn more about participating in breakout room sessions, see Join a breakout room in Microsoft Teams meetings.