You can create new widget areas to be used for the placement of additional widgets in any area of the website. To create a new widget area, navigate to your website admin (not the customizer), browse to Appearance > Widgets, and scroll to the bottom of the page.
Simply enter the Widget Area name in the input box. You can enter any name that makes sense to you and explains the location of the widget area. Next, you need to click over the “Create” button.
Clicking Create, will make the widget area to show up in the available widgets areas. Please refresh the page to show the custom widget area.