http://ka-ge.facebookwkhpilnemxj7asaniu7vnjjbiltxjqhye3mhbshg7kx5tfyd.onion/business/help/2169779963333459
Specific placements: In the ad creative section, hover your cursor over the placement group you want to edit, then click Edit . Editing placement groups lets you customize images or videos for groups of placements that use the same recommended aspect ratios. If you want to customize an image or video for a single placement you can click More to reveal all placements in that group, then click Edit for the specific placement you want to edit.