Lars I… Bushra… Romy v…

How can a player find the special 2v2v2v2 battle mode within the game client to start a match with a friend today? I am looking for the right tab in the play menu to select this unique combat style and learn the basic rules. I want to make sure I understand how the round system works before I jump into a competitive game now. @League_of_Legends (LoL)