Content is managed on the ad group level in Zemanta One.
1) Go to the desired ad group, navigate to the Content Ads tab and click “ + Content Ads” button.
2) Choose “Single Content Ad”
Zemanta's content management system was built to support thousands of articles because most marketers have blogs and sites that publish content regularly.
However, you can choose to create a single content ad. Click on “Single Content Ad” option.
3) Enter the ad copy and other info.
All fields with the exception of Label are required fields.
4) When all the fields are populated and of correct length, click Upload to complete.