Don’t know too much about characters in unreal. I am dedicated to producing a working realistic physics driven helicopter. It does take years doesn’t it? I worked this out by bloody minded trial and error driven by the belief that it simply must be possible. Can’t point you at any documentation.
I have seen out of the corner of my eye talk about blending physics and animations which might be worth a look or, if you enable physics on the character then he will collapse in a heap - enabling physics can be done in bp.
Anyway, I have reposted my answer to you as an answer to the question so I hope you will give it an uptick. Not that I care but it might help guide someone else to the answer.