Each Batch Executive contains an Assigned Recipes object. When you assign recipes and recipe folders to the Batch Executives, you release the recipe to production, making it available to the operator to create and run the recipe. Individual recipes and recipe folders can be assigned to run on multiple Batch Executives; however, all the units needed for a particular recipe must reside on one Batch Executive.
Assigning a recipe to a Batch Executive allows it to be displayed in the Batch List in the Batch Operator Interface. You normally assign to a Batch Executive only high-level recipes (procedures and perhaps unit procedures) that you want the operator to be able to select and run individually. We will also assign an operations-level recipe (OP_FINISH) so that we can run it individually to demonstrate some features in later sections. We will talk more about the Batch Executive in the next chapter. (Although the Batch Executive has not yet been enabled, assign the recipe anyway.)