Hello @Keith13,
No, you need to upgrade the X theme to the Pro theme, The Pro theme has more advanced features than the X theme such as Header/Footer builder and Layout builder. You can use Pro Header/Footer builder to create a custom Header/Footer for the page, posts, archive page, etc. You can create a custom layout for blog pages, category archive pages, and tag archive pages. You can also create custom layouts for the WooCommerce shop page, Product archive page, and Product details page as well.
https://theme.co/docs/footer-builder
In the X theme, you need to install the Cornerstone page builder plugin separately from the X theme bundled plugin whereas in the Pro theme, you don’t need to install the Cornerstone page builder separately. The Cornerstone page builder plugin is inbuilt with the Pro theme.
You may check out our doc to learn more about the difference between X and Pro themes.
Hope it helps
Thanks