Abstract: Managing manufacturing or other process is dependent on inventories of finished product. Inventories of final products are reviewed on a strictly periodic basis, the period being uniquely determined for that product at that time. When an inventory is found to be below a predetermined limit, a manufacturing run is proposed. The schedule for that manufacturing run is determined based on the process required for that product, and the capacity limitations of one or more of the processing steps. The demands of a processing step should not exceed its capacity. A Drum Buffer Rope scheduling method is used for this manufacturing run scheduling to keep it within the bounds set by the capacity-constrained resource(s).