4. Write the case Index Number. 5. Enter the county where the affidavit is notarized. 6.These are documents and forms relating to the areas in which they are located. Most documents and forms on this website are in Adobe Acrobat (. Learn how to create an accurate affidavit letter with our free printable templates. Affidavit Form Template. Create affidavits quickly with our user-friendly online template. These are the official forms for use in Family Court proceedings.