This forecast method uses a schedule of events with known part usage rates to create a dependent demand forecast for parts associated with those events. This method was developed for the aerospace and defense industries where maintenance events are often scheduled and part usage can be estimated.

Aggregation of lower level Scheduled Event Maintenance forecasts to upstream locations occurs automatically by means of the Related Stream ID; each of the two streams must point to the other's Related Stream ID. It is important to note that the External Indicator for the rollup stream must also be set to n, but the External Indicator for the Scheduled Event Maintenance stream itself must be set to y.