It's funny. I have lurked or followed the gas station anecdote of yours but from the other side.

After school I've worked at a gas station as well and we did not need to close because the shift swap was the same as over the day.

You exert your cashier(?) and the next one inserts the new. And you count in the office and take the time you need.

Half an hour incl. Some other minor takes was part of the shift. Simple as that.