A society shall provide in its laws that if its reserves as to all or any class of certificates become impaired its board of directors or corresponding body may require that there shall be paid by the owner to the society the amount of the owner's equitable proportion of such deficiency as ascertained by its board, and that, if the payment is not made, either:
The society may specify the manner of the election and which alternative is to be presumed if no election is made.
IC 27-11-6-7