When using machine centers and work centers where the work center has a consolidated calendar, it would save time and errors if the function to calculate the work center calendar would calculate the machine center calendars then the work center if the work center is set to use a consolidated calendar.
An alternative would be to create a function to calculate machine and work center calendars or be able to select via a dialog box if you want to calculate both. It would then first calculate all the machine centers and then the work centers.