Just go to Utube, search Hunter anyone can program their own it is super simple.
DRF Hunter Pro-C Controller Series Programming Part 1 of 4 - YouTube
I use all their options with the 3 programs, the rule of thumb is 15-20 min for regular heads.
30-40 with rotatory.
best way is place flat tray like a jar lid and measure the amount of water 3/8" - 1/2" is plenty.
2x a week is hard to maintain a great lawn in summer heat 3x works
also 4-5 AM to keep evaporation to a min, also keeps many problems from developing.
Also the sprinklers installed in new homes have their pre=filters removed so the installers don't get call backs.
So what happens is the heads get clogged, they are next to impossible to clean out.
you have to buy new ones which come with prefilters
.