With my old irrigation controller, I could set it to manually water a zone (or a program), then immediately set another zone or program to run, and then another, etc. It would start with the first “command”, then tack on the other tasks afterwards.
Trying the same thing with Rachio immediately cancels an ongoing process, and then starts the new one. It would be great if they would stack and all run, rather than cancel (especially since you may even know or notice that the previous one(s) have been cancelled).
Example: I have a separate fixed schedule that will apply 0.20" of water for each of my zones. The idea is if yard work or something is scheduled, and I’m running Flex Daily (as I always do), I could put down enough water to go another day or two for any zone I want. Right now, I’m having work done in the back yard, and would like to water everything except that. So I’d like to run, say, four other schedules, one for each zone requiring water, by manually starting each one in turn. They would/should then run each in turn, and I wouldn’t have to wait for one to finish before programming in the next.