Contact Social Profile

Hello,

I understand that there is an option for you to link a social profile to a contact in the contacts IOS app. I am using the iPhone X with the 12.3.1 software version. I have been having trouble figuring out how to link the social profile to the contact. (Facebook for example)

Online research has sadly been unsuccessful.

Any information on this matter would be greatly appreciated.

Thank you in advance!

-NM