How do I setup a specific Multiplayer game where there are rounds and teams?

Hi! I’m trying to make a multiplayer game in Unity where there is a team of 6 against 1.
I would also like to eventually make it so there are teams and rounds.

How would I go about setting something like this up?

If there are any tutorials or pieces of info you could give me, that would be fantastic.

Thanks!

This is a lot to ask in one question. I recommend dissecting it piece by piece. The best referral i can give you is the documentation.
http://docs.unity3d.com/Documentation/Manual/NetworkedMultiplayer.html