Sign in on the tablet's home screen first, then come back.
Go to the tabletPick the store that is short — the one the cases are for. You choose who orders them on the next screen.
It goes on their next order, marked for you. When it arrives they send it over. If they don't order within 3 days, the request lapses and you'll see it here.
These go on your next order automatically (column S, "for store …"). Took one out? Tap "We didn't order it" so they know.
on 's next order