Join by link:
When you open the Meeting Link or select Click here to join the meeting in your meeting invite, you'll be taken to a page where you can choose to either Continue on this browser, Join on the Teams app, or Download it now. If you already have the Teams app installed, the meeting will open there automatically.
In the meeting window that opens you can set your camera, mic, background, etc. Then click Join Now when you are ready to enter the meeting.
If you don't have the Teams account and the organizer has allowed it, you may have the option to enter your name to join the meeting as a guest. If you do have a Teams account, select Sign in to join with access to the meeting chat and more. Then, depending on the organizer's settings, you may join the meeting right away or go to the lobby where people in the meeting can admit you.
Add a room while you join:
When you’re choosing your audio and video settings, you have the option to connect to a meeting room and use its audio and video devices.
Join your meeting. Select Room Audio, wait for a room to be detected or Search for a room. Make sure Bluetooth is enabled on your device.
Select Join Now.
Join meeting from the Microsoft Teams mobile app:
Once you've join a meeting on the mobile app, you can:
Also, if you're the meeting organizer, you can: