How to properly open and close these harrows

So I am pretty green on this farming, my Dad has these harrows, when both wings are extended , they use a cable on each side to keep them from bending back. Where do the cables go when they are closed and you want to move it? And do you have to back up to get them to fold back out each time?

So I am pretty green on this farming, my Dad has these harrows, when both wings are extended , they use a cable on each side to keep them from bending back. Where do the cables go when they are closed and you want to move it? And do you have to back up to get them to fold back out each time?