To qualify for equivalent position and experience, under the provisions of section 72(1) of the General Business Law, as amended, an applicant for licensure as a private investigator shall have performed investigations as to the identity, habits, conduct, movements, whereabouts, affiliations, associations, transactions, efficiency, loyalty, reputation, character, credit, business or financial responsibility or any person, group of persons, association, organization, society, firm or corporation, or as to the origins or responsibility for crimes and offenses, the location or recovery of lost or stolen property, the cause or origin of, or responsibility for losses or accidental damage or injury to persons or to real or personal property, or to secure evidence to be used before any authorized investigating committee, board of award, board of arbitration or in the trial of civil or criminal cases including as to the credibility of any witnesses. Such investigations shall have been performed for a period of three years, for an employer, firm, organization or governmental agency, whether subject to the provisions of article 7 of the General Business Law or otherwise, which required such investigations in the course of its regular operations, and which such investigations were conducted on a full-time basis in a position the primary duties of which were to conduct investigations and same comprised the major portion of the applicant's activities therein; an applicant may substitute three years' experience supervising and reviewing the work of at least three persons performing such investigations, obtained in a full-time position with such an employer, firm, organization or governmental agency, the primary duties and activities of which were such investigation supervision and review.