I've been hunting around for an option but can't seem to find it. So how to you invite friends? Have you got to send them all a PSN message and wait for them to find the lobby?
Hi, me and my friend solved this as follow: Create a lobby/room, name it and have your friend(s) search for that lobby/room and enter. After that the game added both of us in the game friends list and now when one of us create a room/lobby the other just filter the search for room to something like: room/lobby created by friends and join.