Where a person (in this section referred to as the acting district probate registrar) is for the time being required and authorised by the Minister under section 9 of the Court Officers Act, 1945, as amended by section 5 of the Court Officers Act, 1951, to perform the duties of district probate registrar for the district served by a particular district probate registry, the Minister may authorise a specified officer serving in that district probate registry or in the circuit court office which serves the area within which such district probate registry is located to execute, during the temporary absence or temporary incapacity through illness of the acting district probate registrar, the office of district probate registrar for that district and, if the Minister does so, then, such officer shall, during any such temporary absence or temporary incapacity, have and exercise all the powers and fulfil all the duties of the district probate registrar for that district unless and until the Minister otherwise directs.