Tennessee Code Title 33. Mental Health and Substance Abuse and Intellectual and Developmental Disabilities § 33-2-202

(1) Advise the statewide planning and policy council on the three-year plan, including the desirable array of prevention, early intervention, treatment, and habilitation services and supports for service recipients and their families, and such other matters as the commissioner or the statewide planning and policy council may request; and

(2) Provide information and advice to the department on policy, formulation of budget requests, and development and evaluation of services and supports.