$32)$ The main cyclical scheduling requirement is:

A$)$ Service schedules must be similar to manufacturing schedules.

B$)$ Overtime and second shifts must be instituted.

C$)$ Employees must be assigned to time slots and days off.

D$)$ Shifts of $8$ hours a day and five days a week must only be used.

E$)$ Employees must work the unpopular night and weekend shifts