Select Pay Types.

Locate After Tax Deduction by either manually scrolling through the Pay Type List, entering the name into Search or using Show Advanced Filters.

Once the Deduction has been located, select Actions > Copy.

Ensure $ (or % of Net Pay) has been completed with the correct dollar amount to be disbursed to the Payee Bank Account which will defined in Deduction Banking and Repayments.
 

Select Available in Deduction Banking and Repayments. 

Select Save.

NEXT STEP: Once you have added the above deduction, Add the After Tax Deduction in Deduction Banking and Repayments for a specific Payee.