Question about Google Nest Hub

I just had to look up what a Nest mini is. They are no longer called home ^^ Well, to your questions:

You can assign your own name to the Nest Minis. However, they do not respond to this name via voice control if that is what you meant.

To listen to music you have to connect it to a music service like Spotify.

You can create a group where you can add multiple Google Nest Minis or even Google hubs. This allows you to listen to the same music on all devices.

If you want to listen to different music on different devices, you need different music services.