Grouping Client Products To use this custom functionality, you must have whmcs installed and configured, with access to the whmcs system and to the whmcs file system with administrator rights. Install and unzip grouping_client_products.zip Move the hooks_grouping_client_products.php file to includes>hooksMove the grouping_client_products.tpl file to templates>twenty-oneMove the grouping_client_products.php file to the root of your code, i.e. to all other php files To open this page enter https://your.domain/grouping_client_products.phpWhen you change the name of a .php file, the link https://your.domain/your_file.php also changes To change the page title, you need to change in grouping_client_products.php