I would like to utilize the Server and Chat Privided on TeamBuilder.
...then utilize it. i mean... really.
connect to a server. make a channel and password. tell them to your friends, have them join, boom.
chat in the chat channel if you wish.
what you're asking is really vague, and i don't think i'm providing much help here because how to use teambuilder is just smack-you-in-the-face obvious, so maybe if you're having some sort of trouble "utilizing" specific things, let us know so we can try and help?