What do you mean by class tables co and cl?

Cl generally refers to clean cleaning. Co said on the shift schedule: night shift is night shift, make-up rest. In the daily hotel work, co said that he would check out. This is the abbreviation of checkout. Every hotel has its own timetable. In order to facilitate scheduling and improve efficiency, the scheduling is simplified into letters. Usually the shifts of different departments, teams and positions will be different. The ABCO here is not necessarily the same, but it basically represents the morning shift, normal shift, middle shift, night shift, night shift, compensatory time off and rest shifts respectively. According to my work experience, it may be: A- morning shift, B- middle shift, C- night shift, O- compensatory time off.