GA Pro is very flexible and supports a wide variety of Google Analytics techniques. In this tutorial, we’re going to configure the plugin to Send User IDs, as explained in the official GA documentation. Estimated time to complete is about 30 seconds :)
To enable GA to send a user ID, visit the plugin setting and add the following to the option, “Custom Tracker Objects”:
{'user_id': 'USER_ID'}Change USER_ID to your actual user id. Save changes and done!