Hello,

You can create HTML block: https://xtemos.com/docs-topic/html-blocks-usage/ that is added by means of the Extra content block, that can be placed in different places: https://xtemos.com/docs-topic/product-page-local-settings/

In addition, there is an additional tab on the product page that can be different for different products.

If you have any questions please feel free to contact us.

Best Regards