Cross-domain tracking makes it possible for Ptengine to combine data from two or more domains. Say your business has more than one domain or you are using a third-party tool with a different domain, you combine all this data under the same profile.
To set up cross domain tracking merely add another domain to your profile.
How to track Sub-domains?
You do not need to add your sub-domains to Ptengine’s tracking area; it is enough to just add the primary domain. In the above example, we can track support.example.com by adding example.com as your tracking area.