External contact

Hi hward2020

Thanks for your question. You need to ensure you or your admin enables external access within your environment. Please see article here

https://docs.microsoft.com/en-us/MicrosoftTeams/manage-external-access

If that is enabled, go to Chat > Contacts > Select ellipsis (...) and add users. You should be able to add external Teams users and chat with them privately 1 on 1

To note
- Once you enable external access in your environment this can take up to 24 hours to work so it is recommended to wait for this time

- Chat contacts are different from Call Contacts at the current time, call contacts (by selecting Calls on the left hand nav bar > Contacts under Speed Dial, are pulled from Outlook but can be added via Teams
- External contacts are different from guests, which are guests in your actual Teams. For that see article: https://docs.microsoft.com/en-us/MicrosoftTeams/guest-access-checklist

Hope that helps, let me know if you have any more questions

Best, Chris