Multiplayer game

Hi. Im little bit lost and trying to dive into some multiplayer experiment with my project which is entirely made of BB.
This is best practical guide i have found this far: Networking Overview for Unreal Engine | Unreal Engine 5.0 Documentation

So how should it work if i package the project and send it to my friends?
Package.png

Settings.png

Only thing which works is PIE and it spawns 3 player automatically.