You will need to submit a request to this email or reach out using the Support-> Contact Us -> Live Chat feature and ask to make changes to your tax form. Veryable will then reset your tax form to allow you to make the necessary changes.
*Please note: If you have already worked an Op, removing this prerequisite will prevent you from being able to bid until you fill out a new copy.
Those wishing to file with a certain level of withholding or wanting to claim deductions can do so when filing their taxes. Because taxes are not removed from payouts, you do not note deductions/withholdings anywhere on your W9, and it is handled when your file your taxes.