1. Click on the Launch tab from the left-hand sidebar.
2. Click on the + Load Media button. This opens your media library.
3. Choose the creatives you want to launch by selecting the checkboxes next to them.
Click the "Select [x] creatives" button to proceed.
4. At the top of the launch grid, click on the Group Creatives button.
A dropdown will appear. Choose Flexible Ads from the available options (you’ll also see Carousel and Multi-placement Ads here).
5. Select up to 10 images or videos to create one flexible ad.
These creatives will appear as swipeable units within a single ad.
6. Click on + New Flexible Ads Group to create additional flexible ads using different sets of creatives.
This allows you to launch multiple flexible ads at once.
Once done, click Confirm to finalize your flexible ads for launch.