Section 176(1) in Goa Succession, Special Notaries and Inventory Proceeding Act, 2012
(1)The testator, who has children or other descendants under parental authority, who will not upon the death of the testator be under the authority of another ascendant, may substitute the said children or other descendants by heirs or legatees of his choice, in case the said children or other descendants die before completing eighteen years of age, irrespective of their sex. This is called pupillary substitution for minors.