How do I program the timer to water automatically?

To set watering frequency, press the "S" button to cycle through options. Settings range from 1st to 7th. You may set up 1st (once a day), 2nd (once every two days), 3rd (once every three days), etc. To select water cycle on dial, turn the dial to select one of the 13 settings you wish to run. For example, water at 6 AM for 15, 30 or 60 minutes; water at 6 AM and 6 PM for 15, 30 or 60 minutes; water at 7 AM for 15, 30 or 60 minutes; and water at 7 AM and 7 PM for 15, 30 or 60 minutes.