How do I change the vaping mode (Power, Normal, or Eco) on the Xros 4 Nano?

When using 0.6/0.7/0.8/1.0/1.2Ω pods, click the power button 3 times within 2 seconds to access the vaping mode setting, then click the power button to choose P (POWER), N (NORMAL), or E (ECO) mode. Wait 3 seconds to save the selected mode. When using a 0.4Ω pod, clicking the power button 3 times instead lets you adjust the wattage directly. (Page 6)