You cannot add users in that app on a third party device to share your subscription(s) with (“Family Sharing”) for use on other devices. The organizer needs an Apple device (iPhone, iPad, iPod Touch, Mac), to set up Family Sharing; not through the Apple TV app but through Account Settings on one of those Apple devices.
You cannot add users in that app on a third party device to share your subscription(s) with (“Family Sharing”) for use on other devices. The organizer needs an Apple device (iPhone, iPad, iPod Touch, Mac), to set up Family Sharing; not through the Apple TV app but through Account Settings on one of those Apple devices.