To create a job flow having machine type dependence and commonly usable among different types of devices, a CPU of a client PC displays first task information relating to tasks usable in a first print processing device and creates a first task cooperative job flow executable in the first print processing device. Then, the CPU of the client PC creates definition information of the first task cooperative job flow based on an edit instruction entered using the first task information. Furthermore, the CPU of the client PC produces definition information of a second task cooperative job flow executable in a second task processing device based on the definition information of the created first cooperative job flow as well as based on second task information relating to tasks usable in the second print processing device.