You can add a beneficiary to your retirement account directly on the Public app:
Tap the menu icon in the top left corner
Tap Settings
Tap Profile
Tap Personal information
Tap Beneficiaries then tap your IRA account and tap the +Add button in the top right corner
This can also be done on the Public website:
Click the menu icon in the top right corner
Scroll down on the Personal Information page
Click Beneficiaries then select your IRA account and tap the +Add button in the top right corner
Please contact Member Support via in-app chat or via email at support@public.com for any questions.