The attorney general shall appoint such assistants, clerks, and stenographers as shall be authorized by law, and who shall hold their office at the will and pleasure of the attorney general. All fees and allowances earned by said assistants or any of them, or allowed to them by any statute or order of court in any civil or criminal case whatsoever, shall be turned into the general revenue fund of the state treasury, and the vouchers for their monthly salaries shall not be honored by the director of accounts and reports until a verified account of the fees collected by them, or either of them, during the preceding month, has been filed in the director of accounts and reports’ office. Assistants appointed by the attorney general shall perform the duties and exercise the powers as prescribed by law and shall perform other duties as prescribed by the attorney general. Assistants shall act for and exercise the power of the attorney general to the extent the attorney general delegates them the authority to do so.