On my WeatherTRAK I could only have what was effectively a flexible daily schedule… Then there was a setting for each zone that was the usable rain setting. This could be set between 0 and 100%. If I have a zone that is 100% under cover I’d set this setting to 0%. If I have a zone that is under heavy tree cover I may set it to around 40%. This way all the other zones can react as they should to forecasted rain but zones that don’t receive that rain have no way to use a flexible daily schedule and not account for the rainfall.