Idaho Code § 40-307
The permanent offices of the board shall be maintained in Ada county, in suitable offices and quarters, with equipment, records and supplies as may be deemed necessary to carry out the provisions of this title. The members of the board shall select a vice chairman at the February meeting of each year, and the board shall adopt a seal having upon it the words, "Idaho Transportation Board-State of Idaho." The secretary of the board shall have care and custody of the seal. The board shall appoint a secretary and fix his compensation. The secretary shall hold office subject to the pleasure of the board, and carry out administrative duties as delegated to him. For the administration of their functions the board may employ other employees and personnel as may be deemed necessary, prescribe their duties, and fix their compensation.
Idaho Code § 40-307