If you wish to add custom scripts such as tracking code or any other scripts that offer functionality not possible "Out of the Box" with PageLines DMS, then the Custom Scripts Editor is your new best friend.
To access the Custom Scripts Editor, navigate to DMS Toolbar → Custom Code → Custom Scripts Editor.
The Custom Scripts Editor can be used to add any kind of custom or third party
<script> such as Google Analytics tracking code.
However, the Custom Scripts editor does not support CSS, LESS or PHP, if you wish to add these types of customizations to your website, please use the correct methods.