...
If you are using WHMCS below version 6 you need to add a menu entry at your WHMCS template which links to https://yourdomain.com/index.php?m=supportpin
An example hook to add the menu entry is included in the module package.
On WHMCS v6 or above a sidebar widget is available, thereforce you do not need to add a link to the module page.
At the module configuration you choose between 2 different sidebar themes