The most up-to-date information about Team guests from Microsoft, including screenshots of both the owner and guest experiences, is available in Actions: Add Guests to a Team (Microsoft).
Add A Guest To Teams
Owners can add a guest account to a Team as follows:
- Open the Teams application.
- Select the Teams option on the Navigation pane to the left.
- Find and open the team you would like the guest to access.
- Select More options (…) beside the team name.
- Click Add Member.
- Enter the email address of the guest, then press Add.
- Close the box.
The guest will then receive an email to the address that was entered. This email will provide them with a link to the team.
Guest Account Access
If the guest does not already have a Microsoft account to login with, they will need to create one using the email address that was invited to the team. If they already have a Microsoft account, they will login and the team will automatically be added to their list of accessible teams.
The guest will be able to access Teams through their web browser or they will be able to download the Teams application to their device.
As a guest, they will only have access to the Team that they were invited to, including the channels for the team, and associated conversations and files, as well as and any other tabs added to the team. Guests can chat privately with anyone in the organization, read files in chats, and share their own files in channels.