A:AnswerIm not sure how to do it on the physical machine but the app is pretty user friendly. As long as it is in "auto" mode and not "manual" you should have a slider that you can select the percentage
A:AnswerAlthough the display lights cannot be dimmed, you do have the option to turn them off completely while the unit is operating. To do so, press and hold the mist level button for 3 seconds.