Hunter has run time calculator on their website which is really nice.
link
The default setting by the builder were really incorrect accordingly.
U program each zone based on terrain and plantings, it pops out a nice schedule that U can print.
these systems have 3 separate groups A,B & C within them, you can do a lot to water correctly and have your plants thrive rather than survive, takes about 15 minutes.
I split mine up where A is lawn, B is the plant beds, and C is the palms.
Each of those groups have different needs.