Select Creative
It’s now time to attach the media that accompanies your ad campaign.
Start by clicking +Creative.
If you have not yet uploaded material to the creative library, click the Upload Creatives button.
With creatives in your library, select the checkbox next to the creative to add to the specific ad set.
Once you’ve selected all the desired creatives, click the Attach button at the window's top right corner.
Next, Publish your Campaign!
Note: To learn about scheduling your creatives, see the Scheduling Creatives