How to Block Players from Joining a Room

It is possible to create a room which isn’t joinable by members other than the room owner. To do so the owner should create a room with the isJoinable property set to false.

Blueprint to create a room with isJoinable set to false

Here the isJoinable property is set to false by Set Bool Property. This property along with other properties is passed to the Create Node Room function. This will prevent other members from joining the room, until the isJoinable property is set to true.