Beginner advice -SoCal

I live in LA and have only ever had a dumb sprinkler system. It has 5 zones
1 - Small amount of grass by side walk
3 - Flower beds
1 - bushes along back wall.

Traditionally it has been set of odd days and ran for approximately 8 mins on each zone.

When I setup the Rachio on daily flex, it wants to water for about 1h20 in one go in each zone and then nothing for weeks. This does not make any sense to me as it would cause huge run off and puddles everywhere. Also most of the beds are covered with stones so as the soil gets no direct sunlight.

How can I take advantage of the Rachio system, at the moment it is set on manual because I don’t trust it, especially in this very hot SoCal weather.