Im not blaming old head for his messed up situation but something is off. He's either a convicted felon or sucks at math because just being in a store that long you would through osmosis know how everything works, so theres not reason he couldnt be an assistant manager or store manager, shift leader something.
fukk at those levels the only thing you need is incrementing math skills, as shift leaders you might set the rest of the stores shifts making sure nobody gets overtime.
As assistant store manager, you might check up on the shift leaders work, and handle food orders for the store, then at store manager you gotta make sure your stores money is right and everybody under you is gettin right.
Something...........

...........something

something...............isnt right. and i want to completely put it all on the business side of things.