In this article, we'll explain how to add family members to your Facebook profile's About Me page and how they are related to you.
How to add a family member to your profile in Facebook on your PC?
Adding family members is quick, but you will have to wait for the person to confirm your relationship.
Navigate to your Facebook profile. On the desktop version of Facebook, select Profile at the top of your Facebook page. In the app, select More (three horizontal lines), then tap View your profile.
Select the Info tab. (In the app, select View Your Info.)