If my game uses Photon Multiplayer, can my users host their own game?

If my game uses Photon Multiplayer, can my users host their own game? Or do they all connect to a single server?
PS: I’m using Photon Cloud

Photon always uses a central server between the players. This can be Photon Cloud or hosted by yourself or since Photon v3.0, you could even distribute the server with your game, so players run it as dedicated server in their lan.

Photon Unity Networking more or less ignores the server and uses a MasterClient as “central” user. The MasterClient is useful to start a game session, assign scores, etc.