Port Forwarding 2Wire Router

I’m trying to forward my ports for a server I set up. I have a 2Wire router. I was following this guide but I got lost here:

I don’t know what application name I should use and what options I need to pick. Any help is appreciated.

The application name will refer to what you want to lable the port forward as, it could be anything you want. call it Gmod or soemthing that you will remember and the ports you need to forward can be found easily with a google search.