Whenever a proceeding charging that a lawyer is personally incapable of practicing law is based upon conduct or neglect of duty in respect to the affairs of a client, the complaint must also allege specifically any such conduct which would justify the imposition of discipline, so that the Professional Responsibility Tribunal may hear evidence thereon, and in its report shall make findings and a recommendation as to whether the lawyer should be disciplined or whether he should be found personally incapable of practicing law.