Rename Macbook in Apple ID screen How can I rename Macbook Pro in the screen below (taken from appleid website).

I know that on iOS I can do that by going to Settings -> General -> About -> Name but not sure how I can do the same on Mac (I am on El Capitan)



I believe it is doable as I saw something like that done on Apple's website
(as you can see all devices have John's part in them and I am trying to do the same). Source
You can change your Computer Name from System Prefs > Sharing > File sharing.
You can search prefs to find it...