Subchapter IX-A. Management Supervisory Service. § 1–609.51. Establishment. § 1–609.52. Composition. § 1–609.53. Competitive appointments. § 1–609.54. Employment-at-will. § 1–609.55. Management Supervisory Service skills maintenance and enhancement. § 1–609.56. Pay for Management Supervisory Service. § 1–609.57. Residency preference. § 1–609.58. Transition provisions.