What must I do to enroll in the Plan? Before you can join the Plan, you must complete an application to participate in the Plan.To whom do we pay the benefit? To add or change a beneficiary, or update any beneficiary information, members must log in to their ASRS secure homepage. Generally, an ERISA plan participant can select just about anyone to be their beneficiary. An IRA or 401(k) beneficiary can be any person or entity the owner chooses to receive the benefits of a retirement account after he or she dies. Learn about retirement benefits in Arizona and divorce, the ASRS retirement system and the role that a QDRO plays in divorce proceedings in this state. The Summary Plan Description (SPD) should include your plan's claims procedures. Usually, you fill out the required paperwork and submit it to the plan. Retirement Benefits.