The Auto-Advance option located inside of the Automated Device Enrollment Library Item allows an Apple TV or Mac to skip all setup assistant steps when connected to ethernet while in Setup Assistant. To take advantage of this option, follow these steps:
Follow the instructions in the Automated Device Enrollment support article to create or modify an Automated Device Enrollment Library Item.
For both Mac and/or Apple TV, for the "Skip screens during setup..." option, choose to "Automatically advance through all Setup Assistant screens", as shown below.
