If the method of changing beneficiaries in insurance policies is prescribed by statute or by the policy itself, the required formalities must be observed. If the beneficiary has a vested right in the policy or if the policy does not reserve the right of the insured to change the beneficiary, the consent of the beneficiary must be obtained to change the beneficiary. Relevant state statutes must be consulted to determine if they require the consent of the beneficiary to effectuate a change of the beneficiary.