MAAP Challenger Installation

I have a question about installing MAAP Challenger step bars. If I understand the install steps, the brackets mount where the cab is bolted to the frame. There is no way to back up the nuts to remove the bolts, they are boxed in, that hold the brackets.
Anyone have any experience with this install? Am I missing a trick?

They are captured nuts and should not turn when you remove the bolts

They are captured nuts and should not turn when you remove the bolts
You were correct, thanks. The installation went smoothly and they look sharp.