A use case cannot be started. Interaction described by use case can be initiated by someone. Imagine situation where for performance reasons some of what system does in response to user interacting with system to reach user goal is postponed and scheduled for latter processing.
Payroll is the total amount required to pay workers and employees during a week, month or other period. One of the government offices that desires to automate their payroll system is the NSO Camarines Sur which is located 2nd Floor MMCN Building, Panganiban Avenue, Naga City.