If your shop opens at 10A, but you need your managers to be in at 9A to go to the bank and prepare the store to be open for the day, you would need your shifts to be scheduled at 9A. However, you cannot currently override the store operating hours for shifts.
Why should we implement this
Because I feel it's essential to business operations to have people scheduled to perform tasks outside of store hours that cannot normally be done during store hours. (i.e. bank runs, inventory, orders, etc)