I once had a brain hurt with a boss from many many moons ago.
Basic maths and common sense.
You have space for 3 items but they come in a (smallest) box of 6. 3 go out on the shelf, 3 go to Over Stock (OS) in the ware house.
No matter how often I explained, the Store manager would tell me off each and every week for having OS and when I asked what she wanted me to do?
Wait until my levels are lower before I order. I waited until I had Non left
(which she complained about, because of empty shelf space.) but of course come delivery I still had OS.
Finally she told me she would do an order and I had to watch and I better pay attention etc etc. so I did.
I still remember the look on her face when the first order came in
we had so much OS as she had been all high and mighty and no matter how hard I tried to explain that she was ordering 'Units of' not individual lights she would not listen.
So where I was ordering 1(box of 6) because I needed 3, she ordered 3(boxes of 6) because we "only need 3" there were no less than 8 items that had a smiler set up, and where I had 2 left of somethings and would not have ordered she did because "we need 1 more to make 3".
She left me alone after that, I guess my 1/2 a pallet of OS did not look so bad compared to her 4 pallets of OS and me asking her where I was meant to put it as it wouldn't all fit on my shelves out back.