There are two types of beneficiaries.
Beneficiaries can be revocable or irrevocable. Find out which one applies to your policy benefits as this affects the update process.
Request a change of beneficiary form from the life insurance agent or company. It will likely ask for the new beneficiary's full name, address, birthdate, relationship to you, phone number, social security number and percent he/she should get. Are you changing the beneficiary to a trust? Be prepared to provide the trust's name, address, tax identification number, date opened and type of trust.
Get legal advice if the new beneficiary is a minor or individual receiving income-based government benefits. Life insurance proceeds may impact their status or have ta implications.
Finally, talk to your beneficiary. Make him/her aware of the policy, the benefits to be paid and where to find the life insurance contract when you pass.