These are simple to load but can be time consuming. Double-jacket hoses don't quite fit on them so when deploying hoses, make sure you have enough single-jacket hoses for all of these stations first.
The result is that each loop of the hose is held up by a pin, resting on two rails.
Making each loop almost long enough to touch the floor. Then bring the end of the loop to the front of the rack where the pins are and hook the pin under the hose and then onto the hose station's rail.
Do this repeatedly until you have all but the end of the hose on the pins. Then, screw the nozzle on the hose and snap it in place on the end of the rack.
Many of the pin rack stations can't comfortably fit the nozzle correctly. In these cases, improvise.
Observe the picture. Note that the loops closer to the nozzle are in front of the loops closer to the valve. Also note that there are no twists or kinks and that if it is pulled off, it should not be hard to keep it that way.