In an X-Cart store using the Product Advisor add-on, you can choose to enable the "Customers who viewed this product bought" block that will display on product details pages. This block will provide links to products that other customers have bought after viewing the current product.
To use the" Customers who viewed this product bought" block, make sure that the Product Advisor add-on is installed and enabled at your store.
Then configure the add-on settings:
Go to the Settings page for the "Product Advisor" add-on.
Scroll down to the "Customers who viewed this product bought" block settings section.
Adjust the following settings:
Display block in catalog: Enable this option to use the "Customers who bought this product also bought" block.
Maximum number of products to display in block: Specify the maximum number of products shown within the block.
Once you complete configuring the settings, click the "Submit" button at the bottom of the page to save the changes.