After you have selected your Ad Template, Ad Set Group, Campaign/Ad Set, Pricing, Budget, App, Placement, Creative and Audience, you'll get a chance to review your selection before publishing your ads.
Once reaching the Review step in AdBuilder, you may be presented with existing Ad Sets to optionally launch your new ads into. Ad Sets shown here may not necessarily match your Placement option, but they will match all other targeting options (Lookalike Audience, Behaviors, Demographics, Age/Gender, Interests).
Facebook recommends reusing Ad Sets as much as possible to avoid audience overlap within an account.
If you have existing Ad Sets, you'll see the option to choose an existing one.
You can sort by impressions, spend, creation date/time and status in order to locate the appropriate Ad Set to re-use.
From the Review step you can also:
- Save campaign template or ad template within the page by clicking on Save
- Reset template variables by clicking on Reset
- Option to create a saved report from the template by assigning a name and checking the box that reads: Create Automatic Saved Report