An affidavit by a person having knowledge of the facts setting forth the fact of the death of the owner and the name of the person or persons entitled to the use of the plot or right of interment pursuant to RCW 68.32.010 through 68.32.040, is complete authorization to the cemetery authority to permit the use of the unoccupied portions of the plot or interment right by the person entitled to the use of it.
RCW 68.32.050