Idaho Code § 31-4210
When a governing body of a county adopts a resolution as aforesaid, it shall appoint five (5) or seven (7) persons as commissioners of the authority created for said county. Commissioners of the authority shall serve terms of five (5) years. If the governing body of a county appoints five (5) persons as commissioners of the authority, the commissioners who are first appointed shall be designated to serve for terms of one (1), two (2), three (3), four (4), and five (5) years, except that all vacancies shall be filled for the unexpired term. If the governing body of a county appoints seven (7) persons as commissioners of the authority, the commissioners who are first appointed shall be designated to serve terms as follows: one (1) commissioner for a one (1) year term, two (2) commissioners for two (2) year terms, two (2) commissioners for three (3) year terms, one (1) commissioner for a four (4) year term and one (1) commissioner for a five (5) year term, except that all vacancies shall be filled for the unexpired term. Upon resolution by a governing body of a county, after an authority has been created with either five (5) or seven (7) commissioners, the number of commissioners may be increased from five (5) to seven (7) or reduced from seven (7) to five (5). No commissioner of any authority may be an officer or employee of the county for which the authority is created. A commissioner shall hold office until his successor has been appointed and qualified. A certificate of appointment or reappointment of any commissioner shall be filed with the clerk and such certificate shall be conclusive evidence of the due and proper appointment of such commissioner. The service of a housing assistance recipient appointed as a commissioner pursuant to 42 U.S.C. section 1437(b) shall be contingent upon his continued receipt of housing assistance. A commissioner shall receive no compensation for his services for the authority in any capacity, but he shall be entitled to the necessary expenses, including travel expenses, incurred in the discharge of his duties.
The powers of each authority shall be vested in the commissioners. A majority of the appointed commissioners shall constitute a quorum of the authority for the purpose of conducting its business and exercising its powers and for all other purposes. Action may be taken by the authority upon a vote of a majority of the commissioners present. The bylaws of the authority shall designate which of the commissioners appointed shall be the first chairman and such chairman shall serve in the capacity of chairman until the expiration of his term of office as commissioner. When the office of the chairman of the authority thereafter becomes vacant, the commissioners shall select a chairman from their number, a vice chairman, and may employ a secretary, an executive director who shall serve as an at-will employee of the commissioners, technical experts and such other officers, agents and employees, permanent and temporary, as it may require, and shall determine their qualifications, duties and compensation. For such legal services as it may require, an authority may call upon the prosecuting attorney of the county or may employ its own counsel and legal staff. An authority may delegate to one (1) or more of its agents or employees such powers or duties as it may deem proper.
Idaho Code § 31-4210