15.5. Where a pension plan provides for the payment, as a life income, of the variable benefits referred to in section 90.1 of the Act, the following rules apply:(1) for each fiscal year, the member or his spouse sets the income to be received as variable benefits;
(2) the maximum income paid is set in accordance with sections 20 and 20.1, which apply with the necessary modifications, and with schedules 0.6 and 0.7.