Yoland… Mushfi… Roland… Eetu N…

Where is the correct place to click in the main dashboard if I want to play the arena mode with my duo partner today? I am looking for a way to join the match and see which characters are currently the best for this specific style of play. I need a straightforward path to the lobby so I can start my journey toward the top rank. @League_of_Legends (LoL)