Final answer:
To find an employee's payroll, a manager should use a Human Resources Information System (HRIS) or a payroll system designed for handling salary and employee-related data.
Step-by-step explanation:
If a manager is looking to find a certain employee's payroll, the information system most suited for this task would be a Human Resources Information System (HRIS) or a payroll system. These specialized systems are designed to handle employee-related data including salary, wage withholdings, time tracking, and pay history. A payroll system simplifies the process of managing employees' salaries, taxes, and other payroll-related tasks efficiently. This system often integrates with other software such as time and attendance systems and benefits management, providing a comprehensive overview of employee compensation.