Please refer to the various ways of joining a meeting: https://support.microsoft.com/en-us/office/join-a-meeting-in-teams-1613bb53-f3fa-431e-85a9-d6a91e3468c9
You can join a Teams meeting anytime, from any device, whether or not you have a Teams account. It is not necessary for guests to download the desktop app.
If you don't have an account, follow these steps to join as a guest.
- When prompted, choose "Continue on this browser".
2. Enter your display name and choose your audio and video settings. When you're ready, click Join now.
3. This will bring you into the meeting lobby and someone in the meeting can then admit you.
Meeting Organiser or Presenter
If you're the meeting organiser or presenter, you will be notified when someone is waiting in the lobby.
Click Admit to let them into the meeting, or View lobby to admit or deny them, as well as see a list of everyone who's waiting.