Under the Team tab for the project you can add 3rd party team members. We might use this when our customer is using a vendor for their content migration and they want them to have visibility into specific tasks in the overall plan. They are not the customer directly but a contractor or vendor working with the customer.  

You’re absolutely correct! Now what if the third-party member doesn’t exist in the system yet? Do you know how to create one?

Ha, @emaynez, you made me look! I thought you did it from the tab I mentioned, but realized that is only if they already exist. Tricky!    Found it under the “shishkabob” menu for the tenant and selecting 3rd Parties where you can then add them.  

Nailed it! Great job @eduensing!

Platform scavenger hunt… love it!