Not surprised you are asking. When i first set my system up i thought it would be simple. Not so, the set up was not difficult, the difficult part was determining what would work best for my trees. I ended up doing the following. Created separate zones for different needs. Growing developmental trees, seedling beds, mature tree benches. I also sorted and placed my trees so they were grouped by watering requirements.
This became a bit difficult as species also required differential placement due to sun and shade preference.
My system was also modified with a control system to prevent it from watering during rainy days.
For general use i find the drip stake 160 degree 3gph to be the most versatile. Larger containers or pots may have two stakes.
My normal setting is for 8 am and 2 pm, shorter intervals but twice per day.
The shortest answer is that over time you will need to adjust your system and its delivery to suit your needs.
Check your system on a regular basis to ensure the delivery is what you expect.
I tend to water manually during the rainy season and during heat waves. The system is most valuable when i travel.
Hope these hints help and point out the things to consider moving forward.