Usage patterns
〈人〉を受取人に指定するto designate someone as the recipient/beneficiary
He designated his wife as the beneficiary of the insurance payout.
受取人の欄に記入するto fill in the recipient field (on a form)
Please write the name in the recipient field on this form.
受取人として登録するto register someone as the recipient
He registered his son as the recipient on his bank account.