The module provides you with a custom hook so that you can easily place the design panel anywhere you want in the product page.
To use this hook, add this line to the file product.tpl in /themes/[Your Theme Folder]/product.tpl
If you are using PrestaShop 1.7, the path is themes/[Your Theme Folder]/templates/catalog/product.tpl
{hook h=’customTextDesign’}
If you use this custom hook, don’t forget to unhook the module from displayFooterProduct to avoid displaying the design panel twice on the product page.