Need help with Prison Plugins

Hello, I am making a prison server and need a plugin that allows players to rank up and get new permissions when they rank up. Here is my group manager: http://pastebin.com/3cfZ0qPk Here is my ranks I want: http://pastebin.com/tdH4xnPi
If group manager will not work, please convert the group manager files into permissionsex for me, I have not watched tutorials but they make no sense.