Open the File Manager by clicking the "File manager" tab in the right side of the screen.
Select one or more files:
This will activate the "File manager" ribbon in the top of the screen: 
Click the "Management" tab.
Click the "Export"button:
Choose if you wish to include "Attachments" and/or "Reference file numbers" in the export.
Choose the fields you wish to include in the export.
Click "OK" to start the export.