1. Expand Payroll, Setup, Payroll Options.
2. Click on the Additional tab and setup the following:

Method to Recalc Deductions:

Select a method for recalculating deductions. Deductions will be recalculated when a change to a payroll entry is made in Payroll Data Entry. The recalculation may occur automatically, depending on your selection at the Recalc Deductions in Data Entry field.

• Select All to recalculate all deductions. All deductions in the payroll entry will be recalculated except those for which Fixed Amount is selected at the Calculation Method field in Deduction Code Maintenance.
• Select Only Automatic to recalculate automatic deductions only. All deductions for which the Automatic check box is selected in the Voluntary Deduction Maintenance window will be deleted from the payroll entry, and then automatic deduction processing will be performed again. When using this method, if you delete an automatic deduction, it will be added back to the payroll entry when deductions are recalculated.
  Note: Deductions for which an earnings code is entered at the Automatically Apply Deduction to Earnings Code field in Deduction Code Maintenance are not affected.

Recalc Deductions in Data Entry:

Select whether to recalculate deductions when a payroll entry is saved in Payroll Data Entry. Select an option at the Method to Recalc Deductions field to define which deductions will be recalculated.

• Select Yes to automatically recalculate deductions without receiving a prompt. If a line entry is changed, deductions will be automatically recalculated when you click Accept. If you select this option, you will not be able to overwrite a deduction amount.
• Select No if you do not want deductions automatically recalculated. If you select this option, deductions can still be recalculated by clicking the Recalc Deductions button in Payroll Data Entry.
• Select Prompt to receive a message dialog box asking if you want to recalculate deductions. The message dialog box will appear when clicking Accept after making changes on the Lines tab.