Trezor T and MM

Hi, I’m trying to connect my Trezor to MM. I’m using the brave browser extension, I have 3 seperate accounts all using 4 or 5 networks on this extension.
My question is, do I have to add every individual account and network or when I add one account all the networks are automatically added?

What I understand is that you have 3 MM accounts. If they are managed under the same account, you add the network of one account, and other accounts will also have the network you added, so I don’t know if I can answer your question. , if not please @me