27 Miss. Code. R. 220-VII-7.3
Upon a Participant's application for benefits, the Third Party Administrator shall direct the distribution of a Participant Account in accordance with this Article VII. Benefit payments to a Participant or Beneficiary, if applicable, shall be made according to the manner and method of payments as elected in the Participant Systematic Distribution Form or Lump Sum/Partial Lump Sum Form. Such an election, with the exception of an annuity elected under Section 7.4, may be changed by a Participant as appropriate and as allowed by the Plan pursuant to Code Section 457. The election will be effective only if made on the aforementioned forms and received in the office designated by the Board in accordance with such procedures as the Board may establish.
For purposes of interpreting the provisions of the Plan, except as otherwise provided, the Board shall only consider the Participant Systematic Distribution Form or Lump Sum/Partial Lump Sum Form signed by the Participant or Beneficiary, as appropriate, and submitted to the Third Party Administrator.
27 Miss. Code. R. 220-VII-7.3