I for some reason am having trouble getting a server screen to appear when trying to test. I have Net Mode set to play as listen server (have tried both options as well) and as 2 players. I have read that all that is needed is to play as listen server. I set up a custom event to run only on server and spawn a truck, if i only spawn on the server i get nothing in the editor windows spawned. If i set it up to multicast i get the spawned truck in both windows.
Well after hours of trying to solve this and then deciding to post this question, i solved this almost immediately after posting. At some point i ticked Launch Separate Server in the advanced setting at some point.