For each new tab, it’s essential to select the layout to combine, by choosing from eight different types: editor, video gallery, image gallery, FAQ, download, map, contact, and shortcode.
In the Layout section of every tab, you can find the option Use the content for all products. With this option, you communicate to the system to add the tab in the whole range of products selected in the Settings section of the tab. However, you can customize every tab that you have created directly from the WooCommerce product page.