Local municipalities pass their own ordinances, laws, regulations, etc all the time. They just cannot contradict the laws of the state / federal. That is absolutely communities managing their own affairs, writing their own local policy.

That's a good point. I was thinking on a community level, and expanding the group size as necessary in order to provide these things... but it does tend to be a bottom up type of thing (as opposed to top down).

Law creation is probably the biggest outlier though