Yes the homepage widgets only show up on the homepage. They work just like widgets that show up on the sidebar (just like any other theme) except these particular widgets show up on the homepage only.
Each home widget has a specific place that it shows up on the homepage. They all show up in order, with their own specific colors. Here is a guide that Wes made to show exactly where each which widget is located – http://appfinite.com/topic/epik-widgets-guide/
So once you add a widget into any of the widget areas, then that widget and that widget section will show up on the homepage. Keep in mind, ONLY that widget and the section it is located in will show up if you add something inside of it. So if you don’t add anything in the other widget areas, then they won’t show up….only the widget areas that you are using will show up. So that means you have full control over which widget section gets added on your homepage. The entire homepage is “Plug and Play“.
Example, if you only want the Slider widget area, and the Welcome widget area to show up then you should only add widget/content inside of those widget areas and only they will show up on your homepage.
You probably already figured this out, but I thought I’d post this just in case anyone else was curious.
Hope this helps.