Section 402
SEC. 402. Any member of a mutual benefit association shall have the right at all times to change the beneficiary or beneficiaries or add another beneficiary or other beneficiaries in accordance with the rules and regulations of the association unless he has expressly waived this right in the membership certificate. Every association may, under such rules as it may adopt, limit the scope of beneficiaries and provide that no beneficiary shall have or obtain any vested interest in the proceeds of any certificate until the certificate has become due and payable under the terms of the membership certificate.