Upon a will having been proved and filed provided the court shall grant letters probate:

• the executor shall first file an oath or affidavit

Upon granting probate or letters of administration to any person, the registrar shall cause an estate notice to be published in the gazette calling on all persons who have any demand upon the estate if the deceased to present such demand to the personal rep named in the notice within the six months of the date of advertisement set out in the notice