28.1. The Board may also by by-law(a) determine, for the purposes of paragraph a of section 10, the amount of income of the beneficiary unit from the sale of furs; this amount may vary according to categories of beneficiaries determined by the by-law, the income of the beneficiary unit and the territories where harvesting and related activities are carried out or the manner in which such activities are carried out;
(b) determine the other sources of income to be excluded pursuant to subparagraph e of the first paragraph of section 10;
(c) determine conditions for the payment of maternity benefits and factors to be considered in establishing, for the purposes of section 11.2, if a woman would ordinarily have participated in harvesting and related activities, had it not been for her pregnancy, the aftereffects of her pregnancy or the care required by her child;
(d) determine the amount of the daily allowance, which cannot exceed the amount set out in section 11, and the maximum number of days for which a beneficiary unit may receive maternity benefits, which cannot exceed 120;
(e) determine the terms and conditions and the criteria according to which any overpayment referred to in section 13 is reimbursed.