1. Select the content page where you want to add the Image Stripe Content Breaker Section
2. Select the content section in the Structure Tree where you want to insert above or below the "Image Stripe" Content Breaker Section
3. Click on the „+“ and select  „—>“ icon for above or below
4. Click on the „+“ and select  „—>“ icon for horizontal
5. Select "Image"
6. Set a image and press Apply
7. Click on „Publish“ (right up corner)

NOTE: In the Property Inspector you have to option to "Show Header" in order to have a Header and Subline above the Image Stripe Content Breaker

Don't forget to add the "image title" and "alt text" (in the inspector) for each image