Sorry about a stupid question, but really I can't find the method. :(
I have read the comment in "Ragdoll.h", it writes "It can automatically create bone 'Actors' linked with 'Joints' from a skeleton", and it only create actor in ball and capsule.
The function "Skeleton\Toggle Ragdoll Bone" in Mesh Editor is the same result.
But I want let the actor more complex and accurate like the pic. (It's other software uses bullet engine.)
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Can I create the actor manually?

you can do that by adjusting skeleton bone width (scale operator) in Mesh Editor

Thank you very much for reply so fast.
Maybe my question is too bad. :(
I primary want to let actor can be in boxes like the skirt in pic. (The red boxes.)
Can I possibly do it?

I see, but you should use physical clothing for that.

pls check the tutorial in "game basics/physical clothing"

Oh, OK, I see.
Thank you very much.