The judge will ultimately need to determine what is in the child’s best interests. Witnesses usually provide important information to help the judge make this decision. However, attorneys have the job of complying with the court’s rules. The court can set deadlines for disclosure of witnesses and other information. If the witness is not listed, the court has discretion to exclude him or her. There are very short deadlines to ask for a new trial under Utah Rule of Civil Procedure 59. You have only 14 days from the order of the trial, so you need to consult with an attorney as soon as possible. Also note that your custody order should include the items listed in the link “Custody Order” below.