Typically, you work with master schedules in MSW and production schedules in PSW simultaneously. The two workbenches are designed to work together and are aligned as if they were a single workbench.

For example, you select an item on the MSW Schedule Grid and verify the item supply/demand are correct. You can then determine when the item is produced in relation to other items scheduled on the same day by looking at the PSW Sequence Grid.

Or, if you are working on the PSW and move the production order release/due date back, you can then determine the impact to supply/demand by viewing the MSW demand/supply summary panel. This lets you make decisions that are based on displayed data that you can easily verify.