Watering on specific dates

I can only water every third day. For example, I can only water on 8/3, 8/6, 8/9, 8/12, 8/15, 8/18, 8/21, 8/24, 8/27 and 8/30. And I can only water before 8am and after 8pm. How do I set that up? Thank you,

The easiest way would be to use a Fixed Schedule. When you get to the screen that asks “when would you like to water?” ( see screen print #1 below) select Daily Interval and then select every three days (see screen print #2 below). On the time just set it up to complete by 8am.