Unity Photon - Multiple Lobbies

I might be asking the wrong question hence why I still have not found any answers yet. Basically my game model is of 5 levels. Each level has lots of players who are currently on that level. i.e. Level 3 players will be in the Level 3 group to have 1:1 matches with other level 3 players.

My Photon idea: I was thinking of creating 5 lobbies for each of the levels. And then for the 1:1 matches have the player automatically joined to a random player within their lobby. Am I on the right track or have I understood Photo completely wrong?

If this idea is correct then below is my current code:

 void Start () 
     {    
         PhotonNetwork.ConnectUsingSettings ("0.1");
     }
 
     // <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
 
     public void Connect()
     {
         PhotonNetwork.autoJoinLobby = false; 
     }
 
     // <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
 
     void OnConnectedToMaster()
     {
         int index = PlayerPrefs.GetInt("PlayerLevel") - 1;
 
         TypedLobby newLobby = new TypedLobby(index.ToString(), LobbyType.SqlLobby);
         PhotonNetwork.JoinLobby(newLobby);
     }
 
     // <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
 
     void OnJoinedLobby()
     {
         PhotonNetwork.JoinRandomRoom ();
     }
 
     // <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
     
     void OnPhotonRandomJoinFailed()
     {
         PhotonNetwork.CreateRoom(null);
     }
 
     // <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
 
     private PhotonView myPhotonView;
     void OnJoinedRoom()
     {
         GameObject monster = PhotonNetwork.Instantiate("monsterprefab", Vector3.zero, Quaternion.identity, 0);
         monster.GetComponent<myThirdPersonController>().isControllable = true;
         myPhotonView = monster.GetComponent<PhotonView>();
     }