The Payroll Department can only inform you what required fields are to be filled out on the forms.
Payroll cannot provide any tax advice. Your tax accountant will be able to guide you on how to fill out your tax withholding forms for your specific tax situation. There is an IRS Tax Withholding Estimator for Federal that is a good tool, you can find it by
clicking here.
After you change your Tax Withholdings, please watch your paycheck to make sure your tax withholdings are your desired outcome.