A single workshop might have to process work orders with many different loads. The important thing is to consider the load of these WO comparing to the line’s bottlenecks. CONWIP knows how to manage this variability in two ways:
By adding the necessary buffers to avoid the queue hazard on the bottlenecks (way close to the DBR approach from the Theory of constraints),
By allocating several CONWIP tickets to the WO with high load,
This second method is much easier to set up in the field with a digital CONWIP, that will automatically allocate several CONWIP tickets regarding the load rules.