Hello,

The section you are referring is footer widget area.

You can manage the footer widget area by going to Admin Panel > Appearance > Customize > Widgets and place the widget you want in four different footer widget area i.e Footer Widget 1, Footer Widget 2, Footer Widget 3, Footer Widget 4.

For this you can also refer to theme official documentation given below.

http://themepalace.com/theme-instructions/clean-commerce-pro/

Hope this helps.

If you have any problem further , feel free to post them we will happily assist you further .

Best Regards!!