Okay, I didn't let this one drop. Can you please try again? User management at PTC and its connection to the various Windchill systems is a bit complex. I have been working with PTC IT and they have come up with a solution today.
All the users on your project team should belong to the "First" Organization as shown in the image below. As long as they are in the "First" Organization, you should be able to find them right away now.
