It is possible to set up meetings with users outside of your organisation but there is some setting up to do first. Follow the steps below:
1. Login to https://admin.microsoft.com/
2. Select Users > Active Users
3. Click +Add user on the top left of the column and choose ‘Guest User’
4. https://portal.azure.com/ will open
5. Select ‘Invite User’
6. Enter the users name and email address
7. Click ‘Invite’
8. The Guest user will need to click ‘Accept Invitation’ in the email that they will receive
9. When you go back to https://admin.microsoft.com/ and look at Active users, you will see your guest user is there
10. Go to Teams and you will be able to add them to a meeting invite, chat with them etc.. As you start typing their name, they should appear as a person to select.
11. In your web browser, go to https://admin.teams.microsoft.com
12. On the left side menu, expand the ‘Org-wide settings’ menu and select ‘Guest access’ from the sub menu
13. Next to ‘Allow guest access in Teams’ select ‘On’ from the drop down menu.
14. Click ‘Save’ at the bottom of the page
15. Under ‘Org-wide settings’ > ‘External access’ turn on both ‘Users can communicate with other Skype for Business and Teams users’ and ‘Users can communicate with Skype users’. You should click ‘+Add a domain’ and add the users domain that you want to communicate with eg for test@tst.uk.com you would add the domain tst.uk.com.
16. Click Save at the bottom of the page. This may take up to 24 hours before you can communicate with the guest account.