Basically, there's no actual government, the people in the anarchy just work together.
Here's an example, the farmer gives free food to everyone, so the doctors heal the farmer for free, the constructors work on his house for free, the artisans make him stuff for free, etc. And everyone just plays a role in society, and if you decide to be lazy, you don't get anything for free, so if you're a farmer and you decide to stop giving everyone free stuff, the doctors won't heal you, the constructors will just laugh as your house crumble, and the artisans will just ignore you, etc.