Dear Junglim,

Netro automatically creates dynamic watering schedules according to local weather, so if you turn on the smart zone feature for your zone, season adjustment will be made with smart watering schedules, for example when the temperature is low it will automatically cancel all the watering activities. When temperature is over 90 degrees, the evaporation is higher so Netro will water more. 

Thanks,

Netro Support

I use a program for morning, noon, and night. It waters at 8 am, 2 pm and 6 pm for 15 min. Then the weather will fill in any adjustments needed. I have new grass that is 5 weeks. It seems to work well. Hope that helps.