A job execution device, comprising: an operation panel having a display and an operation unit; a job execution unit (16, 17, 18, 19 or 21) for executing a job; a communication unit for communicating with another job execution device via a network; characterized by: a display control unit for obtaining information for displaying an operation window of the another job execution device and for displaying an operation window of the job execution device and the operation window of the another job execution device on the operation panel of the job execution device so as to arrange the operation window of the job execution device and the operation window of the another job execution device; a distribution setting receiving unit for receiving from a user via the operation panel a setting of a distribution process for distributing a process for executing the job relating to a first function between the job execution device and the another job execution device by a predetermined operation for a selection button (54,64) of said first function, when said selection button (54,64) of said first function exists in both of the operation window of the job execution device and the operation window of the another job execution device which are arranged and displayed on the operation panel; and a distribution process control unit for instructing the job execution unit (16, 17, 18, 19 or 21) of the job execution device and the another job execution device to carry out the distribution process for distributing the process for executing the job relating to the first function, when an entry of the job relating to the first job is received in a situation in which the distribution process for distributing the process for executing the job relating to the first function is set. an operation panel having a display and an operation unit; a job execution unit (16, 17, 18, 19 or 21) for executing a job; a communication unit for communicating with another job execution device via a network; characterized by: a display control unit for obtaining information for displaying an operation window of the another job execution device and for displaying an operation window of the job execution device and the operation window of the another job execution device on the operation panel of the job execution device so as to arrange the operation window of the job execution device and the operation window of the another job execution device; a distribution setting receiving unit for receiving from a user via the operation panel a setting of a distribution process for distributing a process for executing the job relating to a first function between the job execution device and the another job execution device by a predetermined operation for a selection button (54,64) of said first function, when said selection button (54,64) of said first function exists in both of the operation window of the job execution device and the operation window of the another job execution device which are arranged and displayed on the operation panel; and a distribution process control unit for instructing the job execution unit (16, 17, 18, 19 or 21) of the job execution device and the another job execution device to carry out the distribution process for distributing the process for executing the job relating to the first function, when an entry of the job relating to the first job is received in a situation in which the distribution process for distributing the process for executing the job relating to the first function is set. a display control unit for obtaining information for displaying an operation window of the another job execution device and for displaying an operation window of the job execution device and the operation window of the another job execution device on the operation panel of the job execution device so as to arrange the operation window of the job execution device and the operation window of the another job execution device; a distribution setting receiving unit for receiving from a user via the operation panel a setting of a distribution process for distributing a process for executing the job relating to a first function between the job execution device and the another job execution device by a predetermined operation for a selection button (54,64) of said first function, when said selection button (54,64) of said first function exists in both of the operation window of the job execution device and the operation window of the another job execution device which are arranged and displayed on the operation panel; and a distribution process control unit for instructing the job execution unit (16, 17, 18, 19 or 21) of the job execution device and the another job execution device to carry out the distribution process for distributing the process for executing the job relating to the first function, when an entry of the job relating to the first job is received in a situation in which the distribution process for distributing the process for executing the job relating to the first function is set.