being a caregiver. lots o'questions

hello i have 2 friends with the mmj for 36 plants each (for edibles they hate smoking) and they want me to grow their stuff for them i am in san bernardino county and so are they but sb county only allows 6 plants so how is that possible? i read alot of the laws and stuff and some of it doesnt add up so how can i go about this the legal way? thanks in advance.

here are the laws for each county in California.
Local Medical Marijuana Guidelines