Sorry for the delayed response, for some reason I didn’t get notified of your response! For warm weather grass, there is a crop coefficient of 0.65 and a root zone depth of 9 inches. Crop coefficient affects the frequency of your waterings, so if that increases frequency increases and if it decreases frequency decreases. Root zone depth affects duration, the larger it is the longer your system is going to water a zone. This article tells you how each individual setting within your zones affect your flex schedule, it is really important to look at the whole picture when running a flex schedule.