Okla. Admin. Code § 450:1-1-8
In order to maintain efficiency and uniformity in the administration of duties, ODMHSAS will devise and maintain forms for use by any party. The forms may be revised periodically to insure uniformity, efficiency, and expediency. The prescribed forms must be used by all affected parties unless another form is approved by ODMHSAS prior to its submission, or other provisions are stated in subsequent chapters. Each division or departmental area shall make available to the public all rules and other written statements of policy adopted or used in the discharge of its functions, all forms, applications and instructions for use by the public, including those required to apply for a certification. Additionally, forms may be acquired by request under 450:1-1-7.
Okla. Admin. Code § 450:1-1-8