Apple 4K TV and multiple computers

Greetings rogerfromcrystal beach,

We understand that you are having some difficulty using Home Sharing, and we'd like to help. Begin by following the guidance found here:

Use Home Sharing to share media from a computer to other devices

Take care.

Give the library on each Mac a unique name, so that you may distinguish them from each other by name, when you select a library to connecting to in the Computers app. For Home Sharing, the Home Sharing settings on each device need to have a matching Apple ID account. If one of the Macs uses a different account for Home Sharing, then its library won’t be discoverable.

You can connect to one computer at a time.