To add the FrescoChat Live-Chat widget to your Prestashop 1.6 website, first visit the URLhttp://mypresta.eu/modules/front-office-features/html-box.html and download HTML Box from Mypresta.eu.
Next, go to your Prestashop Backoffice, menu Modules, to Add a new module.
Upload the zip file containing the HTML Box module you just downloaded.
Next, find this module by using the Search box, e.g. by searching ‘html’ and click the Configure button at the right.
Switch the Editor to Off, and paste the code for the FrescoChat widget directly in the box.
The code for the widget can be found in the Wizard,
which is in the bottom right corner of your Control Panel with this icon;
Display HTMLbox in the Footer, and specify on which pages if desired. Click Save Settings.
The result will be like this: