The settings only show what is currently set system wide in ram currently. The config button is tied to the dashlaunch configapp setting. If you set that in the launch.ini to point at the dashlaunch installer, the config button will launch the dashlaunch installer, where you can change the settings in real time. The downfall to this is that dashlaunch uses that config app as a system settings replacement, so if you need to change network config, you cant go to system settings in the hud, but have to navigate through NXE to the system settings.
The individual game settings are set in the game settings (Y menu) somewhere..... I dont remember where exactly. Those options are set by aurora on game launch if they are set, and reset back to defaults when aurora relaunches.