Step S26: when having confirmed the sum of the ordering numbers HM as “312” in the step S25, the CPU 12 in the printing management apparatus PK serves as the communication section 21 (shown in FIG. 8) to place an order for the sum “312” of the ordering numbers HM to the terminal apparatus TMp through the network NW. More accurately, the CPU 12 places an order for the ordering numbers HM “81”, “79”, “77” and “75” about the users US1 to US4.

Step S27: when having completed the order for the sum “312” of the ordering numbers HM in the step S26, the CPU 12 in the printing management apparatus PK serves as the confirmation/resetting section 25 to reset the remaining number ZM about the user US1 from “21” to “102” (=21+81). In a similar manner or the same manner, the CPU 12 resets the remaining number ZM about the user US2 from “24” to “103” (=24+79), resets the remaining number ZM about the user US3 from “26” to “103” (=26+77), and resets the remaining number ZM about the user US4 from “28” to “103” (=28+75).

<Modification 1: To be consistent with Large Box OB) Assume that users US1 to US4 make requests of orders for ordering numbers HM “170”, “190”, “210” and “220” respectively to a printing management apparatus PK regardless of respective remaining numbers ZM. In other words, assume that a CPU 12 in the printing management apparatus PK accepts the requests of the orders for the ordering numbers HM “170”, “190”, “210” and “220” respectively from the users US1 to US4. Processing goes through the step S24 without executing the aforementioned steps S20 to S23.