Dedicated Server Setup with Fusion-Unity Multiplay-Unity Matchmaking

Is there anyone have any idea, when using Dedicated Server, Unity Multiplay allocates a new server per session? Let's say we have a session of about max players 20 and max tickets also 20 for matchmaking. If any new player creates a new ticket for matchmaking, I see Multiplay allocate a new server. Is it possible to use one dedicated server for multiple sessions? Or Is this normal for allocating a new server per session?