The Disciplinary District which shall have jurisdiction over a member shall be any District, as defined in § 3-307, in which the member maintains an office, or the District in which his or her conduct under investigation occurred. If the member resides in Nebraska but does not maintain an office in Nebraska, jurisdiction shall be in the District of the member's residence. If the member does not maintain an office or a residence in Nebraska and the conduct under investigation did not occur in Nebraska, the Disciplinary Review Board shall determine which District shall have jurisdiction and shall assign the investigation to the Counsel for Discipline.