There are nine security guards. How to arrange shifts?

Guard several entrances and exits. Is it the entrance?

The first method is to operate three times in four classes every 9 days.

1、2 3、4 5、6 7、8 9

Monday Tuesday Wednesday Thursday Friday Saturday Sunday

Morning shift: 1, 2 8, 9 6, 7 4, 5 2, 3 1, 9 7, 8

Middle shift: 3,41,28,96,74,52,31,9.

Night shift: 5, 6, 7, 3, 4, 5, 1, 2, 3, 8, 9, 1, 6, 7, 8, 4, 5, 6, 2, 3, 4.

Off duty 8, 9 6, 7 4, 5 2, 3 9, 1 7, 8 5, 6

Method 2: Suggested method: A person works night shift for 7 consecutive days every week. 9 people rotate.

Advantages: it's the turn of people who work night shifts continuously, because they can know the daily work situation in time when they go to work every day. If there is a problem, you can report it or deal with it in time (you can act as the group leader). Avoid problems such as handover or forgetting handover under working conditions.

Take a day off for the last three days

Monday Tuesday Wednesday Thursday Friday Saturday Sunday

Morning shift: 1, 2 7, 8 5, 6 3, 4 1, 2 7, 8 5, 6.

Middle shift: 3,41,27,85,63,41,27,8.

Night shift: 5, 6, 9 3, 4, 9 1, 2, 9 7, 8, 9 5, 6, 9 3, 4, 9 1, 2, 9.

Off-duty hours are 7,85,63,41,27,85,63,4.

The above is the weekly shift schedule (9), that is, working the night shift for 7 days in a row, and changing it to (1) for 7 days in a row next week. And so on.

I'm with the security company. Ask me if you have any questions.