Add Computer Categories name and banner

Project is to add computer related categories and sub categories to prestashop website : 1- Main category name is Computers and other categories come as subcategory of Computers. 2- Each category and subcategories need 1-2 line of description. 3- Each category or sub category needs related image (located at page header as category image) Size 870X217. Categories are exactly as newegg com categories website.