How can I make a folder automatically recursively give certain permissions in MacOS?

I know how to share a folder, and I know how to recursively give permissions to everything in a folder.

What I would like is to do this automatically. I want to have a folder that is never owned by any user, it is always shared, anything put into there has “everyone” permissions, etc.

It’s a public folder for all users, everything that gets put into is is also public.

How do I do this in MacOS?