How to place an ad
Go to Advanced Ads -> Ads -> New Ad
Create a name for the ad. This is only displayed on the backend for internal use. Select "Rich Content".
Select "Add Media" to add you add.
If you want to make the ad only visible to specific pages or categories, you can adjust the Targeting and Display Conditions.
Do not use the Placement box. Instead, select the "Ad Groups & Rotations".