Get expert advice on filing a motion to modify temporary orders in family law. Learn about necessary pleadings, forms, and timelines for Arizona and Texas.Parents and guardians can file an emergency motion to modify child custody. This motion protects a child from harm. To request a modification, you must file a motion with the court and provide evidence that supports the need for a change to the existing order. He filed a motion for modification. Can I do it without him and file for one or do I need to fire him first and ask the court to let him go since we are in the middle of a case. Step 1: Fill out your court forms. Fill out the following starting forms: â—‹ Petition to Modify the Parent-Child Relationship. A divorce case may last months or years; because the time frames vary and are often unknown a party in the divorce may file a motion for Temporary Orders.