i doubt you'll find anything useful here but give it a shot.
On the touchscreen tap the Settings gear in the upper left corner. On that screen tap the word at the very top of the screen in the center.
That opens other, hidden screens. You can keep tapping around, usually whatever word is at the top center, and see different things and set a few parameters, such as your RV model. Some of the screens are non-functional on mine, such as the generator and load-shedding screens.
At least that's how the touchscreen works on the GT5. I've never tried this on a GT7 but maybe at the next RV show.
Ray