A grid listing is a widget that allows you to display videos, shows, and listings in a horizontal and vertical array.
A grid listing is ideal for displaying multiple rows of similar content. A horizontal listing can be used to display single row of related content
From the Endpoints section of the left menu, Select Responsive website → Website(beta).
Head to the Pages tab
You will be taken to the website customization page.
Select Add page on the right of the screen. (skip this step if you want to add this section to an existing page) and hit the Save button.
Under the newly created page (/ existing page), Select Add section.
Hit the Save button
You can link the created grid listing page to the header menu as well.