Before you can use the Trash, your administrator must set up the Trash options. There are three independent Trash options, Shared Files, Catalog Files, and Managed Documents. To set up Trash option, go to the Options Page by Menu → Username → Manage Options. Then click the Edit button next to the option you want to change. Select Use radio button and Save the change.
After the option is enabled, the files you deleted will go to the Trash. The Trash page can be accessed from Menu → Documents → Trash. The files in the Trash can be restored or emptied much like Windows Recycle Bin. Please note: You only can access the files added to the Trash by you, while the administrators can access all the trashed files.