How do I enable and disable a ragdoll using c#?

I have a character and want ragdoll to activate only when it enters a trigger to give the impression of death. I'v looked around on the forums but they either are for an older version of unity or are in java script which I don't really understand. I have a feeling it might be as simple as setting the character joints to false but i'm not certain because I don't know how to do that as they are children. I'm new to coding as I am more of an artsy type and try to avoid it. If you can tell me or give me advice and maybe add notes so that I understand it better that would be great.