What are the rules and regulations concerned with payroll calculation? How do we implement a payroll system in an organization?

1-You should have all informations about employees like basic salary, benifts and attendace information like present days,absens , overtime and vacation days (sick leave, annual leave days and other informations.2- make sure that all informations has been entered correctly.3- run a new salary calculation order.4- print payroll statement for review payroll elements.4- print payroll statement and eeview