Visible stock is still stock
The difference between a carton on a warehouse rack and a fabric sample on an open shelf is presentation rather than status. Both belong to the occupier, both are in a position that means something, and neither is a cleaner's to handle. Open shelving simply makes the temptation greater, because the item is right there and visibly dusty. The temptation is greatest with items that are obviously delicate.
Stating the rule explicitly prevents a well-meant mistake. A studio's samples may be arranged by colour, by supplier or by project, and a shelf that has been tidied looks better and works worse. The instruction is the same as in any store: clean the structure, work around the contents, report anything that has fallen or been damaged. Studios notice a rearranged shelf immediately and rarely appreciate it.
