In order to use the shortcodes supported by the SmartFood WordPress theme, you must install and activate the "SmartFood Shortcodes" plugin.
The theme supports many different shortcodes and each one of theme comes with different settings. Furthermore the theme comes with an easy to use shortcodes editor built-into the WordPress page/posts editor.
To add a shortcode navigate to your page/posts editor and click the "Shortcodes" button into the editor like the screenshots below here shows.
The shortcodes are split in different categories, hover with your mouse on each category and a list of the available elements will display. Once an element is clicked, a popup window will display, showing it's settings. Customize it's settings and then press the "ok" button. The shortcode will be added to the editor ready for use.