Online beacons for main menu party creation


I’m trying to implement a sort of party system into my game where players are able to see players from their steam friendlist and invite them into a party after which their characters become visible on each members of the party, very much like the PUBG main menu lobby system.

I have looked around and found that “Online beacons” is what I should probably use for this but I can’t find much documentation or information on the subject. Our entire game is currently made using blueprints and as far as I can tell online beacons require some c++ coding, which isn’t that much of an issue as I can code well enough in C++. But I was wondering if someone could guide me in the right direction on how to start creating something like this. Any help is very welcome!