The plugin runs upon the completion of an order. After installation it is added to the group of vmpayment plugins in the Plugin Manager. You can publish the Google E-commerce Tracking Plugin right in the Plugin Manager and also add Google Analytics code there.
Since the plugin is added to the vmpayment group it is also visible in the Virtumart Settings, in Payment Methods. You do not need to turn on or set the plugin there.
The plugin contains a tracker - Traditional Syntax, link below:
Google ecommerce tracking
If you come across any errors, please, report to: firstname.lastname@example.org