Payroll Deduction Settings can be found within Labor Management / Settings then Payroll Deduction Settings.
To add deductions, select Add Payroll Deduction on the top right. Add the information per the pop-up.
If you'd like to also add the Payee Name and Address, select that checkbox to add the information. Once complete, select Add Deduction.
Once all deductions are added, the next step is to go into each applicable User Management page and add these to the employees within the Payroll tab.
To make changes to deductions, click on the row you wish to edit. You can edit the information, or make in inactive by selecting the Deactivate Deduction option.