This pamphlet describes how to prepare, serve and submit a motion in the. Supreme Court, Bronx County.This procedural guide covers generally applicable rules of motion practice in the Bronx County Supreme Court. Trial motion is a written request to the court that is usually in writing. It requests that the judge take some specific action regarding a criminal case. 1. Fill out a child support modification petition. 2. File the petition with the Family Court that most recently established your order. 3. Intheblanks form required for any matter originating and electronically filed in Supreme or Surrogate's Courts in Richmond County.