User can, you can hide existing Cloud Documents from the Lightning component by following these steps:
- Go to the specific record where you've added the "Drag Drop & Upload Files to Amazon S3" Lightning Component.
- Click on the gear icon and select "Edit Page."
- Find the "Drag Drop & Upload Files to Amazon S3" component within the page editor.
- Within the component settings, locate the attribute named "Hide Existing Cloud Documents."
- Tick the checkbox next to "Hide Existing Cloud Documents."
- Click on "Save" to preserve the changes made.
- With these settings in place, Cloud Documents will be hidden from the Drag Drop & Upload Files to Amazon S3 Lightning Component.