Enable Google Analytics' Enhanced Ecommerce Functions
Google Analytics' Enhanced Ecommerce functionality allows the measurement of user interactions with your products and the user's shopping experience, including product impressions, product clicks, viewing product details, adding a product to the cart, initiating the checkout process, and more.
If you have this add-on available on your store (Shift4Shop Pro - $229 or higher), you can use the following steps to turn it on and enjoy its tracking benefits.
Log into your Shift4Shop Online Store Manager.
Using the left navigation menu, go to Marketing > SEO Tools.
When the SEO Tools page appears, click on the Google Tools tab lined across the top of the page.
Look for the "Enable Enhanced Ecommerce" checkbox and place a check in it.
Click Save at the top right of the page to confirm your settings.
Your store will now track Product Impressions, Product Detail Impressions, Product Add to Cart actions, Checkout, and Purchases and send them to your Google Analytics report. Just be sure to set up the appropriate matching funnel steps in your Google Analytics account.