Product Controller provide more flexible way of adding the a Product Rule while you are adding the Product to the site. You can see the Product Controller Widget on the right navigation. Click on the high lighted link to add a rule to this Post.
Up on click on the "Add New Product Rule" link from the previous slide, the control will be carried to Add New Product with the selected Product Nike Cap. See the high lighted.
Once product is chosen then add desired business logic, in this case Country is equal India is added with option Append Image. So the product will show an image as pop-up for users from India.
After saving the Product Rule, user is redirect to Add Product page from where user started.