Specifying that the scope of the Maryland Mental Health and Substance Use Disorder Registry and Referral System includes both private and State inpatient and outpatient mental health and substance use services; requiring the Maryland Department of Health and the Department of Human Services to ensure pediatric hospital overstay patients are placed in the least restrictive setting when clinically indicated and when possible; establishing the Workgroup on Children in Unlicensed Settings and Pediatric Overstays in the State; etc.