Enable site search tracking for your website
To get started with Site Search tracking, login as the Super User or an Admin user and go to Administration > Websites > Manage (or Administration > Measurables > Manage). From here, edit your chosen website via the pencil icon located on the right
and you can then enable or disable Site Search tracking for your website.
Here is what the admin UI looks like for a particular website:
All Site Search reports are available under the main menu Actions > Site Search.