Under “Placement Details”, you have a list of ad groups associated with that placement, as well as a list of ads associated with that placement. Every ad’s name presented in the list is a link that enables users to preview the ad. You can also edit the ad, get the ad tag, see the hourly stats, clone the ad, delete the ad, or change the ad’s status (online/offline) inline.
When an ad is cloned, it is copied and the name of the cloned ad is “Clone of [Original Ad Name]”. The cloned ad inherits all of the properties from the original ad except for the impressions.