Creating an Ad Block on a Product Page
To create an Ad Block on selected product page you can make use of the product group functionality. Further information on product groups can be found here and a fundamental understanding of product groups is required in order to use this feature.
Creating an Ad Block
Once you have created your product group you can go ahead and select the "Ad Block" tab from within the product group editor. From here you can build out the content, or upload your images into the editor as shown below.
When you save this it will show on the product page like this:
Note:
You can set start and end dates for the promotions to appear. If you want to show them indefinitely you'll need to select a date far into the future.