I have a couple of questions regarding Facebook profile pages.
I noticed that when I go to my friends' profiles on Facebook, the links at the top of the profile differ from friend to friend. For instance, one friend has entries "Timeline, About, Photos, Friends, More: Places, Sports, Music, Films, TV Programmes, Books, Likes, Events, Groups, Review, Notes", while another friend also has an entry under More called "Apps and Games", and yet another friend has an entry under More called "Foursquare". How can these links found on the top of one's own profile page be customized?
I notice that with one friend when I click on "Friends" on the profile's top navigation bar I get a subnavigation bar with entries named "All Friends, University, High School, Current City", while on another friend's profile when I click on "Friends" I get a subnavigation bar with entries "All Friends, Mutual Friends, Recently Added, High School, More: People you may know, Following". Why are these entries in the profile Friends subnavigation bar different. Even more puzzling, and perhaps even more interesting, is how come one other friend only has "Mutual Friends, Followers" in this subnavigation bar and there is no "All Friends" link where I would view all of this friend's friends? On yet another friend's profile, when I click on "Friends" no sub-navigation bar shows up and instead I see the message "No friends to show". Why do these subnavigation bars differ, and more importantly, how can I configure them?