This feature will save you hours of time you would have spent to create the product boxes separately.
Step 1: Create a comparison table and add the product.
Step 2: Before saving, please select the Create Product Box check box and then hit the Save button.
Step 3: Now that a new product box will be created for the same product.
Step 4: Repeat the same for all the products that you add to the comparison tables. So you don't need to create the product boxes seperately :)