I see a little display down on the control panel... what does the motherboard look like? Are there any dip switches? Do you see any button labeled program? If so you probably have a digitally controlled menu of options. If not then it's probably set with the dip switches.
If there is any text on the pcb it might be worth searching for that to see if there are other cranes with the same pcbs... then look in the manuals for those to see how to program/configure them.