Simplest way to get multiple players?

I’ve just started learning unreal and my knowledge is pretty limited so far. I’ve made simple platformer I want to try playing with a few friends and I’m looking for the simplest method to do this.

from what I’ve read so far it looks like I need to follow this guide:

But looking this over I can tell it will undoubtedly take me a while to get working, so I’m wondering if there’s any simpler method? Even if it means having the project files and ue4 installed on every machine I want to play from, even if it only works over LAN. I just wanna play this with a few friends for a bit and hoping I can without hours of troubleshooting, thanks!