A lawyer shall not form a partnership with a nonlawyer if any of the activities of the partnership include the apply of regulation. A subordinate lawyer does not violate the Rules of Professional Conduct if that lawyer acts in accordance with a supervisory lawyer’s reasonable resolution of an arguable query of professional duty. Professional misconduct by a lawyer underneath supervision might reveal a violation of paragraph on the part of the supervisory lawyer although it does not entail a violation of paragraph because there was no direction, ratification or knowledge of the violation. A lawyer who receives a doc referring to the representation of the lawyer’s client and knows or fairly should know that the document was inadvertently sent shall promptly notify the sender.