In a server that communicates with a large number of pieces of information equipment, a communication schedule between the server and the information equipment is created in an appropriate and efficient manner. Provided is an apparatus in a client-server system, having a scheduler embodied on a computer readable medium for creating a schedule, which comprises: a means for calculating a table of maximum values respectively for the number of processes for each time slot, which calculates the table of maximum respectively for the number of processes for each time slot, which is obtained by finding the respective maximum value of the number of processes performed in each time slot in a cycle of N days; and a means for calculating a time slot, which finds a time slot having the minimum value out of the maximum values obtained in the foregoing manner, in order to find a time slot in which the number of processes performed in the same time slot is brought to the minimum under the rule that the processes including communication are performed in the same time slot every N days.