First time Networker :/

I'm attempting to implement Networking using the NetworkManager. I've never tried it before, and I was going to ask for some advice first.

I have a game which is seperated into a GameEngine.DLL and a Unity project which is entirely GUI. No game logic occurs in the unity project, it's all GUI associated stuff. I'd like the GameEngine stuff to just run on the server, so I assuming I just use the GameEngine on the Server/Host side and set up the client side to receive the GameEngine messages...

First time Networker :/