The Submenu will automatically display all the subpages in the category using this widget.
Now find the page that you would like to add the Submenu widget and turn on the content editor.
TIP: This widget should generally be used only in the right hand column of the website, not in the main content body.
If you want you can click on Submenu Settings. However there shouldn't be any changes you want to make other than making it hidden or changing the title of it.
1. Generally you would select this to be a global widget.
2. Select NO if you want it to be shown on your website. Select YES if you would like it hidden.
3. What do you want to Title the Widget. Default title is Menu.