A simulation of a dispatch department

The operations of the dispatch department of a manufacturing organization have been analysed in terms of matching the labour supply to the labour demand (as determined by customer orders). The problem differed somewhat from those traditionally associated with dispatch departments since set-up costs and company policy resulted in high stocks being carried. In this context, service level did not refer to the ability to supply a customer from stock, but to the proportion of orders processed within a specified time interval. The operations of the department were simulated using FINSIM—a computer simulation package developed for the BBC microcomputer. FINSIM offers the capability of seeing the simulation proceed graphically on a visual display. The final outcome of the study was an aid to decision-making consisting of a family of curves of service level against the maximum acceptable time allowed to process an order. This set of curves allowed prediction of the quantifiable consequences of any proposed changes in the department. Of particular significance was the use of the curves to help demonstrate that the seemingly important delays to order documentation within the computer department were in fact inconsequential.