Simple C++ Multiplayer Demo Available Anywhere?

I’m looking for an extremely simple multiplayer demo where each player simply moves a box/cube (Pawn, not Character) across the screen. The tutorials that I’ve found are either for Blueprints or they use a Character with the Character Movement Controller. I’d like to be able to simply move a box and have the movement replicated on the server. I’ve been able to have the server’s movement replicated on the client, but not the other way around (and it looks like lots of people have this problem). This setup, however, is simply the C++ Rolling Ball tutorial where I add a second player in the editor. I’ve tried to have the move commands only executed on the server, but it still doesn’t work, so I’m missing something fundamental.

If anyone is aware of a demo/tutorial like this, that demonstrates the concepts with any extra complication, I would appreciate it very much if you could post a link to it. Thanks.