Operating and adjusting the grind fineness of the Mahlkonig EK 43 is quite simple. Press on the handle of the bag holder and slide an open bag onto the spout. Release the handle to hold the bag in place. Use the large rotary knob on the front of the grinder to select desired grind fineness, and then switch on the grinder! Voila! It will grind a pound of coffee in less than a minute. It is a great choice for a retail bulk coffee sales operation.