This knowledge is used to serve as the customer service liaison with the Defense Finance Accounting System (DF AS) on payroll situation involving a broad range of payroll transactions, FEDERAL TIME-IN-GRADE (TIG) REQUIREMENT FOR GENERAL SCHEDULE (GS) POSITIONS: Merit promotion applicants must meet applicable time-in-grade requirements to be considered eligible. As the Chief of Civilian Pay, receives and examines complex payroll authorization documents (e.g., leave authorization forms, saving bond and allotments, employee organization deductions, etc.), makes computations, an prepares proper forms for the pay of the full variety of civilian position (e.g., doctors and nurses under Title 38, firefighters, teachers, etc.).