People, machines, materials and delivery dates
A plan is only useful if it looks at four things together: who is working, on which machine or line, whether the material is there, and when the customer expects it. In Lean, those four come from the same system. The planner does not have to piece them together from four lists.
Lines and workstations. Every production order is linked to a line or workstation. Per workstation, you record how many pieces per hour it makes.
People and teams. You plan work orders per team or per employee. Public holidays are marked in the planning.
Materials. Material requirements show which components arrive on time and which do not.
Delivery dates. Every order carries the requested date. If the planned end is later, the order gets a flag.