In this tab, you configure the workflow nodes in the context of the order-related BOM. The order-related BOM is the context order after the fifth level in which you can override the parameters (= fifth concretisation level). Please refer to the section "Workflow Configuration/Overwrite parameters".
In practice, it means that the production order is the last stage where you can define production rules. (on which machine is to be produced, specification of plant-specific parameters, quality-dependent parameters...)