The Oklahoma Veterans Commission, in addition to its other powers and duties as herein provided, shall have the following specific powers and duties which shall, however, not be deemed to be exclusive: (a) To make necessary rules and regulations not inconsistent with Section 221 et seq. of this title for the operation of the institutions. (b) To rule upon eligibility of applicant and requirements for admission to the institution. (c) To appoint all administrative personnel and provide for the employment of all such other personnel as may be necessary to carry out the provisions of Section 221 et seq. of this title and any other duties as may be prescribed by law. The salaries and tenure of office of all personnel shall be determined by the Commission. (d) To approve or disapprove all claims or expenditures from such appropriations as may be made to the Commission prior to the payment thereof, except as may be otherwise provided by law. (e) To enter into agreement or contract with the Director of Mental Health and Substance Abuse Services, or other departments of the State of Oklahoma, to provide necessary services to carry out the provisions of Section 221 et seq. of this title. (f) To enter into agreement or contract with the Veterans Administration, or other appropriate federal agency now in existence or hereafter created, to provide necessary services to carry out the provisions of this act; including but not limited to, agreements by which the federal government contributes funds for the construction of buildings in whole or in part. (g) To contract, as herein provided or as otherwise provided by law, to remodel, construct, repair, build additions, modernize or add improvements necessary for hospitalization and domiciliary care of veteran patients, members, or employee housing, using funds available by law. (h) To expend necessary sums from funds provided by law, to provide architectural plans, specifications, costs or other information required by the Administrator of Veterans Affairs, or other appropriate federal agency, as basis of application for approval to receive federal grant of funds to remodel, repair, construct, build additions, modernize, or added improvements of domiciliary or hospital buildings necessary for the care of veterans, including tuberculosis, mentally ill, and neuro-psychiatric, but not excluding others.