Character problem

[Bismark]

Hello I'm back

I have taken several models including Total Overdose characters but I go with the animation that comes with the game, to be more explanatory in the image will be able to see what I mean
my question is how do to make it as presonaje GTA SA (as an example)
and forgive my English

[TGE]

Make the model fit GTA San Andreas' skeleton.
There are quite a few videos you could use for reference like this one:
https://www.youtube.com/watch?v=H2p6mSEXoN0