Walk into the base (top of the floor) to pick up the next delivery item, then carry it to the pulsing gold marker on a shelf to put it out. Head back to base for the next one.
Customers, colleagues, and management wander the floor — bump into one and you'll lose a moment and hear about it. Management costs you the most time. Watch for the odd hazard too.
Every so often you'll be pulled onto a till — tap each item before the ring runs out.