Manage Product Layout

go to the Catalog → Products → Edit Product

If you're looking to manage the layout of your product pages in AbanteCart, and you have a couple of options depending on whether you want to make changes to just one product or all of them.

For a single product page:

Go to the product's edit page in your AbanteCart admin panel.
Look for a "Design" tab.
Here, you can choose a layout specifically for this product. This lets you override the default layout.

For all product pages:

Go to Design > Layouts in your AbanteCart admin panel.
Find the layout called "Default Product Page." This is the template used for all product pages unless a product has its own assigned layout.
Edit the "Default Product Page" layout.

Page Builder Behavior

When you use the Page Builder to edit a page's layout, it takes over the layout management. This means:

Default Layouts Ignored: The page's original, default layout and any pre-existing blocks are temporarily set aside. The Page Builder operates independently.
Page Builder's Block System: The Page Builder has its own system for adding and arranging content blocks. You'll need to use the Page Builder interface to add the specific blocks you want on the page.
Reverting to Native Layouts: To return to using the page's original layout and blocks, simply remove the page from the Page Builder. This will restore the default layout and any associated blocks.

In essence: The Page Builder provides a flexible way to customize page layouts, but it requires you to build the layout from scratch within its interface. Removing the page from the Page Builder restores the original layout.