I am currently making a game about where you are a Mafia Family leader. and I need some help with how it's gonna work. I've read alot about the sicillian mafia and the American. But I still don't understand exactly how it works.

For example. There's the head boss, that's just the boss of it all. Then there are bosses under him, that control different things. One controls the gambling, the other something else. How does the Boss of it all affect it?