How to calculate the number of personnel in the property management company?

4 cleaning personnel (2 upstairs, lobby and garage 1 name, residential ground 1 name), 2 engineering personnel, 12 security personnel (upstairs 1 name, lobby 1 name, parking lot 1 name)

The above is for reference only, and the detailed staffing depends on the specific conditions of the property under management and the service standards provided.