Recalibrating levelers

[Mbiery]

Please clarify some things about this photo. Which is the front and which is the back? And which jack corresponds to which +/- buttons
Thank you

 

[geotex1]

Looks like you have a 4-point system. Jacks adjust in pairs. Top of screen is front of camper. So the +/- at top is the front pair of jacks. The one at the bottom is rear jacks. To the left is street-side jacks and to the right would be curbside jacks.