Organizing a Uhaul

My granddaughter was moving, but they did not know how to organize a Uhaul to the maximum usage of space, so that's where I came in.
They call me the organizer, because I believe in moving the majority in one trip.
I showed them the correct way of loading a truck, they was surprised of how they got all of the heavy things loaded first then on and on.
Out of 6 rooms of furnitures, their second load consist of one room worth of stuff to load, needless to say, after four and a half hour, she has efficiently moved into her new house.