For each Production Operation defined for a product, you can assign a Resource that is responsible for completing the Operation. A Resource can be a workstation (e.g. Cutting table, Assembly machine) or a person (e.g. John).
The Tasks tab in the Make screen groups all Production Operations that are related to an open Manufacturing Order by Resource.
You can change the order of Resources in the Tasks tab from Settings → Resources. On this page, drag-and-drop the order of Resources, and this will affect the order on the Tasks tab.