If you need to a add new box for the center box homepage, you
can use the button in the
bottom of the Body section of the layout manager.
Once you have clicked
the button, it will display a new box entitled Empty as you can see in the
picture below:
Click the Edit link and choose one of the containers in the Main Selection to display it in the center box of your site. Just simply follow the guide for each section you want to add that was already discussed in the previous chapter.