Family Sharing on Apple TV
Family Sharing lets you share apps and viewing privileges with up to six family members. One adult in your household—the family organizer—invites family members to join the family group and agrees to pay for any iTunes Store or App Store purchases made by family members. (Family Sharing, which works across all your Apple devices, is different from multiuser switching on Apple TV.)
Important: You can’t initiate or configure Family Sharing directly on Apple TV. It must be done on a Mac, an iOS device, or an iPadOS device. To learn more about setting up Family Sharing, see the Apple Support article Set up Family Sharing.