Section 222.40 - When determinations of relationship are made for parent, grandchild, brother or sister(a)Parent. The claimant's relationship as a parent of the employee is determined when the claimant applies for an annuity or for lump-sum payments.(b)Grandchild. The claimant's relationship as a grandchild, rather than as a child, of the employee is determined when the claimant applies for lump-sum payments.(c)Brother or sister. The claimant's relationship as a brother or sister of the employee is determined when the claimant applies for lump-sum payments.