When I expand the apps window after pressing the 'Home' button, there are 4 icons displayed at the top of the page under the 'search' icon. The 4 apps are separated from the other installed apps with a horizontal line above and below them. These 4 apps are also found on the full page alphabetically. I never use 3 of these apps and want to replace then with apps I do use. But I can't seem to find what this section of the apps page is called or how to change them. When I press and hold, the icon is duplicated on the home page and I have to delete it from there.