you mean put a real person in your world right?
You want to make the suit which in your world maybe or maynot as a skeleton mesh move as real people.
You need to check multiple things.
First, does the content is a skeleton mesh or just a static mesh.
If it just a static mesh, you need to bine a bone and skin it to make sure it can move first.
Second, if it was already be a skeleton mesh, if you want to move like your reality people move, that means you need sth. called motion capture.
I definitely dont know which step you with because too few messages in your text, IF you stuck in Second way that means you need to have sth. can capture your movement whatever the things is, and setup the different software that capture movement then set some plugs to complete that.
If you want to make the livelink, there are so many things waiting you todo.