Running two clock with water restrictions

I’ve never set up a Rachio clock before but I have a client who has 18 zones and from what I gathered I will need to use a 16 zone and 8 zone clock. We live in Florida and we are under water restrictions for one day a week. Client wants system to pretty much adjust on its own which from what I’m reading is called Flex scheduled. What is the best way to set this up so the clock do not end up overlapping and still holding to the one day a week and not after 8am or 6pm and is it possible or do I have to break the water restrictions and water two separate days? Is clock automatically aware of weather restrictions for my area or do I need to set that in there?