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 ‘Quick Menu’ button at the bottom-right corner of the PDF window.
2. Tap the New Folder
3. Set the name of the folder. (Default: Untitled folder)
4. Tap the ‘Done’ button to finish