I've set up a lobby with the NetworkLobbyManager, and as far as I understand, when you call either StopHost or StopClient, the client will disconnect, and reload the scene set as LobbyScene, is this correct? That's what it says in the manual for NetworkManager at least:
"When the network is stopped, by stopping the server or host, or by a client disconnecting, the offline scene will be loaded. This allows the game to automatically return to a menu scene when disconnected from a multiplayer...
Handling Host and Client disconnecting
"When the network is stopped, by stopping the server or host, or by a client disconnecting, the offline scene will be loaded. This allows the game to automatically return to a menu scene when disconnected from a multiplayer...
Handling Host and Client disconnecting