It’s easy to share Apple TV with multiple family members. When each member in a household has an Apple ID, switching member profiles on Apple TV creates a custom experience, with Up Next lists, music, Game Center data, and content recommendations personalized for the currently active user.
Note: Changing users does not change the Apple ID used for iCloud. To change your iCloud account, open Settings on Apple TV and go to Users and Accounts > iCloud.
On Apple TV, do either of the following:
Open Settings , go to Users and Accounts > Current User, then select a name from the list and sign in to that account.