If you have a google analytics account and want to use that for analysis of the visitor traffic to your website, you have the option in EHQ to include your google analytics details.
Read this google support article to determine your traffic tracking id and get the code snippet to be included. Then follow the below steps in EHQ.
1. Navigate to Site Settings and click on the Advanced tab. Select the option "Enable Traffic Tracking".
2. Enter your google analytics account details or the copied code snippet from the google website, into the boxes provided and click Update.
3. An acknowledgement message is displayed once the settings are updated.