If you're talking about TurboTax Desktop, the ON479-A does work.
If you're using Forms mode, you can click the spots to add or remove the X next to whatever option you need at the top of the form. Putting the X next to 2A, will automatically add the spouse's income, if you're doing a joint return.
If you're using EasyStep Mode you'd just make your selection on the page, and then TurboTax Desktop will add the needed info onto the form.