While it may be tempting to help to speed up the process, it’s best to stay out of the movers’ ways as they load and unload the truck. Your movers may have a specific plan of how to stack items and boxes in the truck.
In the meantime, you can:
Make sure the movers have a clear path from your house to the moving truck
Stay available in case they have any questions
Get a headstart on sweeping empty rooms once all the items are removed