@capatto So what I did is that I replicated the head, the motioncontrollers and some other functions. You should have a good understanding of the Epic’s multiplayer shootout found for free in your launcher. Plus, have a good look at the UE4 Network compendium: http://cedric-neukirchen.net/2017/02/14/multiplayer-network-compendium/
Finally, I find the best thing is that you cannot do anything multiplayer without understanding the basic of replication, RPC, etc.
It’s very logic. Sit, think, do. After a while you will understand the big picture. It took me 5 weeks to elaborate and understand the multiplayer side, even if I develop since, well, too much time (1984 someone? with TRS-80 64k) 