For your shrubs, trees and cacti, there is a great website that guides us toward the proper irrigation for our desert vegetation. What I did was consult that website, then come back to the Rachio to update my settings accordingly. The drip emitter zones need the biggest adjustment. Here’s a guide that shows how I went through the process step by step. Note that you’ll also get root depth settings that you should also adjust. As one example, it looks like your root depth for cacti should be 8-12 inches, but you’ll also need to create custom nozzles and use lower precipitation rates per the step by step guide.
Curious as to what part of town you live in? I’m in Ahwatukee.