The Secretary of Education shall be the executive officer of the State Board of Career and Technical Education for the administration of this act. Except as hereinafter otherwise provided, he, as executive officer, shall appoint, from time to time, with the approval of the State Board of Career and Technical Education, such expert assistants, other than those already provided for by law, as may be necessary in career and technical industrial, career and technical family and consumer sciences, career and technical agricultural, career and technical marketing and distributive occupational education or career and technical business, computer and information technology education, and all clerical and other agents necessary in carrying out the provisions of this act.