On my coach it has the Quadra by Big Foot. Panel for the controls is on the left side of the driver. It is very simple. You can lower all the levelers at the same time or one at a time which ever is easy for you.
Since I have a diesel pusher when I arrive at destination I will dump the air first. Then I lower the levelers one at a time until it barely touches they barely touch the ground. Then I start the leveling procedure as needed. Look at your level dots and extend accordingly until you have a level platform. Best system I have found yet. I used to have HWH on my other coach and it had a joystick and it was hard to level.
Then the panel will also have an emergency button. If for some reason you are having problems with the retraction of the leveler, just press the emergency button and all the levelers will bypass and retract immediately.