How do I use the Control Lock feature to prevent children from changing settings?

Press and hold the Control Lock button for 5 seconds to enable or disable the Control Lock feature. When activated, all buttons are disabled and 'CL' will be displayed alternately with the estimated time remaining. Even after the dryer shuts off, the power button will allow the machine to be turned on but the controls will remain locked until Control Lock is turned off. (Page 24)