This field displays the name and address of your business. If you want to edit this information, click the zoom arrow next to the field.This field displays your employer identification number or your business number, as it’s entered in the Business Number field of the Company Information window.The T4 Boxes listed in the left side of the window correspond to boxes on Form T4. If your company must provide T4 information, select the appropriate box and then use the Select Categories list to choose the wage and deduction categories that should appear in that box.