How does Destruction exactly work in Unreal 4?

Destruction in Unreal Engine 4.

If anyone knows how it works exactly? Because from experimentation it seems to act more like a toggle state than anything and i’m not saying that’s a bad thing but it is a problem when the entire object breaks apart at once when compared to gradually from a single point or multiplier points. E.g if you were to be shot at the tip of the finger and something gradually move up your arm disable the connections between each bone. In short your arm would slowly break apart.