After the order has been accepted by OPERS, but before the alternate payee receives a total distribution under the Plan, the alternate payee shall be entitled to all of the rights and privileges afforded to Plan beneficiaries, including but not limited to, the rules regarding the right to designate a beneficiary for death benefit purposes and the right to direct Plan investments, but only to the extent permitted under the Plan.
Okla. Admin. Code § 590:40-11-6