How do I do the custom on/off setting? I don’t have my instructions.

Wayne, thanks for your question. Here are the instructions. Set the time Use up ( ) and down ( ) arrows to set the time — note AM or PM time. Programming options Set your custom on and off times and/or select any presets that suit your schedule. Choose your custom on/off times Press ON TIME, then use up ( ) and down ( ) arrows to set on time — default is 6pm Press OFF TIME, then use up ( ) and down ( ) arrows to set off time — default is 10pm When using ON TIME and OFF TIME times, make sure the blue light is lit next to the button. The blue lights only illuminate when plugged into a wall outlet. Preset schedules Three preprogrammed times run individually or simultaneously. Choose from the following: EVENING (5pm-12am) MORNING (5am-8am) ALL NIGHT (6pm-6am) When a preset or custom program is chosen, the blue LED indicator light turns on. If a preset schedule does not fit your needs, a custom on/off time can modify the preset. Example: Using EVENING (5pm-12am) and adding an OFF TIME of 10pm creates a 5pm-10pm timer schedule. Countdown Press COUNTDOWN, then use up ( ) and down ( ) arrows to set from one minute to 24 hours. The last countdown time set becomes the default until the countdown button is pushed again. Note: When daylight saving time occurs, use the down ( ) and up ( ) arrows to adjust the time by one hour.