Hi NC,
Your edit read my mind.
I’m not a power user, but I believe that is correct.
I’ll give a scenario from my yard.
My back yard has 4 spray zones linear with eachother. The outer zones are sunny and have a lower precip rate, so they’ll run longer.
My central zones are full circle sprays, in some shade, so they’ll run shorter. All zones have min. 80% overlap.
I’m expecting over time, the zones with common characteristics will run more frequent and longer, out of phase with my central zones. And that may be ok because they’re more shady, they put water down faster, and when either set of zones runs based on MAD, almost every zone will get some water.
I’m new to this also, so if I see things slipping out of whack, i might need to empty a couple zones to re-synchronize things.
Time will tell. The season is early, my zone buckets are still stabilizing.