The Tax Options [Purchasing] form can be opened from Tax Codes [Purchasing] form by clicking the ellipse button to the left of the Tax ID field. This mini form has 3 buttons and each button is described below.
The Delete button is used if you would want to remove a tax component from a particular tax code (from the grid area).
The Edit button when clicked will open the Tax Components [Purchasing] form. In this form you can edit anything about the tax component's information.
The Cancel button when clicked will close the form.