A method, apparatus, and system for outputting a locked print job by a printing device connected to a first terminal and a second terminal over a network. The method includes receiving a request including information identifying a second user delegated to the locked print job, to perform the locked print job from a first user, and generating the locked print job in response to the request. The locked print job and the information identifying the second user is transmitted to the printing device over the network. The printing device stores the locked print job, the information identifying the second user, and authentication information that unlocks the locked print job when entered into the printing device and is transmitted to the second terminal associated with the second user. Further, the locked print job is output by the printing device, when the authentication information is entered into the printing device.