Subchapter VI. Registration, Enforcement, and Modification of Support Order. Part A. Registration and Enforcement of Support Order. §§ 46-306.01 – 46-306.04 Part B. Contest of Validity or Enforcement. §§ 46-306.05 – 46-306.08 Part C. Registration and Modification of Child Support Order. §§ 46-306.09 – 46-306.15