On the Super-Admin VERSION page, the Create Days window has Start Date (defaults to today), End Date (defaults to 15 years from today) and a Meal Prep Online Delivery Days weekday grid. Clicking Save:

1. creates one open, unfinished delivery date for every future calendar day between the two dates that does not already exist (past days and existing dates are skipped), and
2. sets the chosen Meal Prep weekdays on every active kitchen location.

It reports "Total dates Created: N". Because it overwrites each kitchen's Meal Prep weekdays, re-check the Kitchen Locations afterwards if kitchens use different days. This tool is intended for Sprwt staff during setup or when the calendar needs extending.