https://www.youtube.com/watch?v=6rU-i2ypuJg&feature=youtu.be

There are some good tips in the video :)
But I will still have to mention Human NPCs is not and never was a replacement for Bush People :)

Tips -
When the NPCs are crouched they are hunting.
Storage items - works off of the items parent class and is why only some S+ items work.
For Farming - Resources need to be in the area for them to harvest.
No trees - No Wood.
Crop Plots - NPCs give the plot a bit of water every time they visit it and you need to add the seeds to grow what you want.
The extra stuff like the Narcotics, Wool, Carrots Etc are what the NPCs have as a bonus you get it by killing them or taming them.