How do you add on your Facebook timeline when you met a friend?

[kaylee]

I saw on another friends timeline that they have in their about me section, under history by year, it says "2005 First met 'friends name' " If you go down her timeline to that year, it has a picture of the two of them and the date the two of them met. The little symbol is a hand, like a hand reaching out for a handshake. I thought it was really cool and would like to attach that to my best friend but cannot find ANYWHERE anything about how to do that and can't get a hold of my facebook friend to ask her. Anybody know about this??
I already have timeline. I am referring to a specific part of timeline. A status of some sort that a friend has on her timeline. Sort of like a relationship status but that's not what it is. It's like establishing when she met her friend. But I don't know how she did that.