The capitol area plaza authority created by Kan. Stat. Ann. § 75-2237 is hereby attached to the department of administration, and from and after the effective date of this act shall be within the department of administration as a part thereof. All budgeting, purchasing and related management functions of the capitol area plaza authority shall be administered under the direction and supervision of the secretary of administration. All vouchers for expenditures and all payrolls of the capitol area plaza authority shall be approved by the chairman of the capitol area plaza authority and the secretary of administration. The capitol area plaza authority created by Kan. Stat. Ann. § 75-2237 is hereby specifically continued in existence, and it shall have powers, functions and duties vested in it by law.