How do I set or adjust the humidity level on the programmable humidistat?

The default humidistat setting is CO (continuous on). Press the programmable humidistat button to increase the humidity level in 5% increments, ranging from 35% to 55%. The humidifier will automatically turn off when the set humidity level is reached and will turn back on when the humidity drops 5% below the set level. To return to continuous on, keep pressing until CO is displayed. (Page 7)