Allowing Residents to take their payments directly would not necessarily require Supervisors to allow that in their practice.

But for Supervisors who do prefer to allow Residents to directly bill and take payments, this could take a real headache off their plate.

If there is a legal reason to not let Residents deal with billing and money, explain the concern.  Otherwise, letting Residents learn to deal with money is a serious aspect of training!  The emotional issues around billing and getting paid are significant, and it ought to be Supervisors who decide when a Resident is ready to start learning how to do that, not just an arbitrary law that says they may not until they are fully licensed.

Let Residents learn all aspects of being a Counselor, including the money part.