I don't know if there was a change in programming since my 2012 hydraulic 6 point Level Up system but mine sure doesn't work like some describe.
To start, do the "Return to Unhitch Height" procedure of pushing "Left" and "Right" simultaneously. This will adjust the front height *IF* the nose was above level when you unhooked (which is most cases). If the nose was low and the process fails, you will have to adjust the front using the "Front" and maybe the "Retract" buttons. You don't have to get into "Manual" mode as the "Front" button is always live.
Note that I didn't do anything to the four rear jacks. There is no need to. The system automatically adjusts them as the front of the RV raises and lowers (part of the equal pressure system). You won't bend the rear jacks by raising the front of the RV.
My system always seems the raise the nose about 1" higher than I want. I attribute that to raising the front jacks until there is a gap between the hitch and pin when unhooking. As I want the pin to be lower than the hitch when I hookup, I just manually drop the nose a bit before backing in.
Once hooked up, simply press "Auto Retract All" (notice the "All" in that label) and the system retracts all 6 jacks.
Pretty simple and foolproof.