Section 3087 of the California Family Code grants parents the ability to modify or terminate their existing custody, visitation, and support arrangements in light of new circumstances. The law states that to initiate a modification of the agreement, the parent who is seeking the change must file a petition with the court. If both parents agree, and the modification is in the best interests of the child or children, then the changes are likely to be approved by the court. If one parent opposes the change, however, then a decision is made at the court’s discretion.