System Preferences Firewall Assistance

I've looked about everywhere for help on opening ports through firewall, they all say to do it under System Preferences>Sharing, but I don't see anything about my firewall... I need to add this port. Anyone willing to help?

You do this via System Preferences > Security > Firewall > Advanced after turning on and hitting the little '+' button. This link also explains the process.


Firewalls, Proxies, & Ports

Well this is what comes up when I do that... Is there any way to change it?

EDIT: Well, I read how he sets it up, but i don't see options to set specific services or applications