How to use the function of inrush current?

On the condition that the measured equipment is powered off:
Firstly, clamp the measured cable through clamp meter.
Secondly, set the clamp meter to a right gear.
Thirdly, press down INRUSH button.
Last, power on the measured equipment, then the starting current of measured equipment will measured and obtained.
This function is typically used to measure starting current of motor or other inductive loads. UT216C has this function.