Add user to an External IM
If you are Instant Messaging externally via Teams and want to add another internal user you can't. So external IM 1-1 is only available currently. We need the ability to have a group IM involving an external user.
Emile Pedneault commented
Not done; if you start a CONVERSATION with an external contact; you miss the "Add People" button on the top right; to add more participants to this conversation. (internal or external).
I see no configuration in the admin center for this; and the work around is a chore...
Anthony G commented
is already done, need team admin / office 365 portal to allow it