The way I understand it, you're supposed to put a feeler gauge between where the throttle stop screw and throttle lever are. By varying the feeler gauge thickness, you're effectively varying the opening/closing of the butterfly valves.
The first setting, at 0mm (so no feeler gauge inserted at all) has the resistance value between VTA & E2 to range between 0.3 & 6.3 kohms. Which means when the throttle's fully closed, the resistance should be between those values. But with such a large difference between those values, how are you supposed to know what to aim for?