You can create folders in PDF window to classify and store PDF files. You can also rename, move, or delete your folders. If you move or delete a folder, the files stored in the folder are moved or deleted together.

Here’s the steps of creating and managing folders in PDF window:

1. Tap the ‘Folder +’ at top-left corner of the PDF window.
2. Set the name of the folder. (Default: Untitled folder)
3. Tap the ‘Create’ button to finish
4. You can also tap the ‘New Folder’ icon under the Blue ‘+’ icon which at lower-right corner of the PDF window to create a folder.