How should the working hours and vacations in the hotel industry be reasonably arranged?

Can be divided into 5 teams, each group has 3 people. A: 11:00-13:00, 18:00-22:00, 3-person mobile class B: 08:00-15:00, 3-person early morning shift C: 15:00-22:00, 3-person mid-day shift D: 22:00-08 Point: 3 people on night shift E: 3 people on break shift. The shift sequence is A-B-C-D-E-A (cyclic). This allows 6 people to be present during the meal time every day, which is convenient for employees. During meals, work will not be delayed because employees have meals. D: The end time of the night shift can be adjusted appropriately, half an hour or 1 hour later.