iOS devices connected to the server can be used as development hardware for a team. This allows a group of developers to share build access to a single piece of hardware and build software for that specific model. If the device isn’t provisioned for the team the server is a member of, you’re prompted to add the device to the team.
Connect an iOS device to the server using a USB cable.
In the Device list, click Use for Development.
This flips the Developer bit on the device, and lets it use development profiles.
To edit options for a device, select it, then click the Edit button.