That stuff is all done automatically. The store’s tills send data to the central warehouse which keeps track of what was shipped to each store and what has sold and what needs reshipping.
The only manual updates needed are when it goes wrong, but it can be hard to know when it has gone wrong. The store may not have been sent stuff because the central warehouse, or supplier, is short of stock. On the other hand …
My local supermarket never had any of a specific hardware item in stock for weeks. Eventually I asked and was told the store’s system did suggest there was a boxful ‘in the back’. They went to look and came back to say the boxful was not there.
“Well, maybe that’s why head office has not shipped any more to you for weeks. They think you still have a boxful to sell. Perhaps someone ought to have noticed the same empty shelf over a period of weeks and asked HO what the issue was. Now, if you tell HO that the store’s system is somehow wrong (maybe a boxful walked out the back door) then I expect HO will get the warehouse to ship you some more. Can you do that?”
A week later I went back and the shelf was fully stocked.
