I didn't want people to do it for me, I wanted people to HELP.
I plan on making a tutorial for this later to better explain why GetBit and SetBit should always be used in a game that you might simply want to include multiplayer in if you find the time to do so. As in, even if it's not a main mechanic of the game. I would assume that by this point in your project, your main problem is that you didn't start off that way and are, instead, using basic keyboard controls as is default.
Start by changing that. Follow the Multiplayer tutorial here: https://www.scirra.com/tutorials/915/mu ... ame/page-6
And learn how GetBit and SetBit work.
Before connecting to the signalling server, sync the player object, player sprite, and playerobject.inputs and add it as a peer input value (again, follow the tutorial)
If you're controlling your player objects via GetBit and SetBit this will allow the peer to control them. But you'll want to follow the tutorial in order to learn how to identify which object belongs to the peer.