You could just wait until December when the online program comes back online ... then you can use the amendment program for free. Your folks need to mail in their return which they can do before you mail in your amended return ...so your return can wait until later.
OR ... you can fill in the 1040X manually ... and you do need to fill in Section 3 however you also need to fill in part 1 and possibly page columns A,B & C on the first page.
