Thanks for the response back, @lahawk81.

I recommend reaching out to your accountant for advice on how this information needs to be entered. 

You should enter any Extra Withholding on Line 4c on the W-4. If this doesn't work for you, then you can follow my colleague's @MirriamM steps on how to make the deductions on your paychecks. If the issue persists, try updating your Payroll, then update the W-4 again and view the Employee's Pay.

Let me know how this goes for you. I'll be here if you need further assistance.