AdRules allows you to launch an ad in multiple existing ad sets simultaneously. To utilize this feature simply:
1. Navigate to "Manage and Report" > "Ads".
2. Use the checkbox to select an ad.
3. Click "Launch in Ad Set" in the "Actions" drop-down menu.
4.Use the "Select Ad Set" drop-down to choose the first ad set you'd like to publish the ad to.
5. Click the "Add another ad set" link to choose additional ad sets and click "Publish" in the upper right-hand corner of the screen to launch the ads when you are ready.