Form Interrogatories are a list of questions on a court form. It helps if you fill in the top part of the form with the case and court information.The person performing the service must sign a proof of service form stating what they served, who it was served on, and the date of the service. This guide contains forms and instructions for propounding Form Interrogatories on your opponent in a California civil case. Who Can Serve My Papers? The Club served Form Interrogatories, Set One ("FI Set One"), on April 18, 2012. Petitioner received a Complaint Form and Notice of Proposed Disciplinary Action on July 23, 2002.