(a) The Compact Administrator may enter into supplementary agreements with appropriate officials of other states under Articles VII and XI of the Interstate Compact on Mental Health.
(b) If a supplementary agreement requires or contemplates the use of any institution or facility of this State or the provision of any service by this State, the agreement is not effective until approved by the head of the agency under whose jurisdiction the institution or facility is operated or whose agency will be charged with providing the service.