Designate a beneficiary account and transfer the benefactor's current balance

Defines a benefactor and a beneficiary relationship between two accounts. At the time of benefactor/beneficiary setup, the funds in the benefactor account are transferred to the beneficiary account, and any further payments to the benefactor account are automatically sent to the beneficiary account. A series of benefactor/beneficiaries may not exceed four beneficiaries and may not have a cycle in it.