The recent software update to the Apple TV, version 5.1, allows users to add more than one Apple ID to the little black box. Access to multiple Apple IDs makes it easier for family members to view movies and TV shows purchased by family members.
To add another Apple ID to your Apple TV, you'll first need to make sure it's running software version 5.1 (Settings > General > About). Once you have verified it's running the latest software update, you can then go into Settings and select iTunes Store. At the top you'll … Read more