There are two main ways you can add a new test(s) to your shop. First, go to the "Product Template" tab located in the left navigation bar.
You can use the search bar by typing in the name of the test you are adding. Once you've located the test, add it to your shop by clicking the Add to my list button.
Save time and add multiple tests by clicking on the checkboxes to the left of the products and selecting Add to my list.
Watch this brief video to see how.