Job Recruitment Website - Property management - Company security shift arrangement: three security guards, one in the day shift and two in the night shift, each with two days off every month. How to arrange it?

Company security shift arrangement: three security guards, one in the day shift and two in the night shift, each with two days off every month. How to arrange it?

A 1-9 morning shift 1 1-20 night shift 22 days, 23-30 night shift.

B 1- 10 night shift 12-20 morning shift 2 1 23-30 night shift all day.

C 1-9 night shift 10 all day 12-2 1 23-30 early shift.

Someone has to work all day. . . .

You can take a day off in between. . .

A, b and c are interchangeable.

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You need 90 people,,, but only 84 people. I missed six classes.