The Public Employees' Retirement System shall make payments of retirement benefits under this chapter to members and to the beneficiaries of those members, by whatever means the board prescribes by regulation to be the most appropriate for the proper and efficient payment of benefits, including, but not limited to, direct deposit to an account with a financial institution that is a participant of the Automated Clearing House designated by the member or beneficiary. The board may provide for alternative means of payment if the member or beneficiary can demonstrate that payment by the prescribed means will cause the member or beneficiary undue hardship.