In Sidebars Settings section you can add custom sidebars that will be used in posts and pages at your website or delete the unnecessary ones.
To add or delete custom sidebars, navigate to Theme Options -> Sidebars section in your dashboard.
Adding a new sidebar
Simply type your custom sidebar name in this field and click on an “Add sidebar” button.
After you’ve created a new sidebar, it will be listed below with an option to be removed at any time.