Psychiatric services such as nursing, psychology, social services, and adjunctive therapies shall be under the direction of persons licensed or registered in their respective fields and employed either full time or part time to implement the patient's individualized treatment plan. Designated treatment components may be performed insofar as is consistent with law by supportive personnel who have completed an organized training or an on-the-job training program to qualify them for the performance of their duties.
28 Pa. Code § 155.5