Log in to your Piwik PRO account and retrieve a tracking script. Install it on your website, or take advantage of their Tag Manager option. 
For more information, see the following:

Piwik PRO Help Center.

Learn more about Piwik Pro analytics in this video.

See also our user guide instructions on how to install and use Advanced Analytics with Piwik PRO in the Acquia Optimize platform.

Advanced Analytics with Piwik PRO.