A spousal agreement between a participant or former participant and a former spouse may waive, reduce or increase the following benefits for a former spouse;
A pension under § 19.9;
A regular survivor annuity under § 19.11-2;
A supplemental survivor annuity under § 19.10-6;
A lump sum payment for regular or recall service under § 19.13.
A spousal agreement between a participant or former participant and a former spouse may be filed with PER/ER/RET at any time in accordance with § 19.10-5 to provide an additional survivor annuity for the former spouse.