I sent this email to support:
"Is there any way that I can get some help in adjusting my watering schedule and run times? The drip line has been adjusted to run for every 4 days for almost 3 hours (159 minutes)!!!
I am located in Apollo Beach, Fl 33572 (Tampa Bay Area.) This zone has a mixture of Palm trees and shrubs and mostly in Full Sun. Also look at the other zones. The other zones are mainly bermuda grass. The Right Lawn zone now has a mixture of palm trees and bermuda grass. The Zone labeled “new plants” is what I did to give more water to new sod and palm trees that were planted in July 2015. I am thinking that I do not need this zone now, the plants and palm trees should be established by now. I have personal weather station in my rear yard, so the rain reports are reliable. I don’t understand the Flex Scheduling system. Appears to be way to complicated and I am way to busy to research it thoroughly."
Rachio Support replied "Rachio here, thanks for reaching out.
If you feel that your watering times are too long you can certainly lower them as you wish. See our How do I edit a Fixed Schedule? article for details on how to do this. If you think you may not need to water these zones for now you can simply uncheck them in your schedule. If you wish to re-add them later you can always check them on again.
Hope that helps. Let me know if you have any further questions."
I went back and forth with support for a couple of days - Now, I am ready to throw in the towel. The answers I got from support lead to more frustration.