Is it possible to have multiple user accounts on a 4K appletv? Currently not looking to get one but am keeping an open mind to add one later after I get other things that are more important to me. Have been upgrading my home theater so other things come first. But if I was to get one mostly for renting movies can access more than one account on the appletv? For example if my sister comes over and wants to access her library on my appletv?