The Card Information window—
Payroll Details view—Pay History is where historical pay details for each employee are stored. You can view and change individual employees’ wage, deduction, and tax amounts, as well as the employer expenses you’ve incurred for individual employees for the current and previous month(s) of the current payroll year.
If you’re starting to use the Payroll feature after the first pay period of the payroll year, you need to enter each employee’s pay history for the current payroll year up to (but not including) the current date. You can enter pay history for specific months or quarters.