Except for those powers reserved exclusively to the “agency itself” under the Administrative Procedure Act (section 11500 et seq. of the Government Code), the power and discretion conferred by law upon the Board to order an examination pursuant to section 820 of the Code; receive and file accusations and statements of issues; issue notices of defense; determine the time and place of hearings under Section 11508 of the Government Code; issue subpoenas and subpoenas duces tecum; set and calendar cases for hearing and perform other functions necessary to the dispatch of the business of the Board in connection with proceedings under the provisions of Sections 11500 through 11528 of the Government Code, prior to the hearing of such proceedings, including the authority to grant a motion to vacate a default decision, approve a settlement agreement for revocation or surrender of a license, or approve an interim license suspension; and the certification and delivery or mailing of copies of decisions under Section 11518 of the Government Code are hereby delegated to and conferred upon the executive officer of the Board.