Change Media Sharing settings on Mac
On your Mac, use Media Sharing settings to set options for Home Sharing and sharing your media library.
To change these settings, choose Apple menu > System Settings, click General in the sidebar, click Sharing on the right, then click the Info button next to Media Sharing. (You may need to scroll down.)
The Media Sharing status indicator is green when media sharing is on.
Select Home Sharing or “Share media with guests” to turn on media sharing.
The name of your media library (you can change the name). This name is shown on other computers that share your library.
Select Home Sharing to access your media library on all your devices where you’re signed in with the same Apple ID.
Select Home Sharing options:
The Apple TV photo sharing options are:
Share media with guests
Select this option to share your media library with other computers on the same network. For others to access your media library, your Mac must be turned on.
Click Options to select sharing options: