On Windows 7 x64 DDPE has installed a hook into Windows Explorer so you can right-click on a file or folder to access the "Encrypt for Sharing" feature.  Its usage seems pretty straightforward, but the feature is not enabled on network drives so a right-click shows the option "greyed out".  I am hoping this is a configuration option where we can enable for a network drive as I cannot see any reason why I should not be able to pick a file/folder on a network drive and then create an encrypted version of that file/folder?

I do not see any documentation on the "Encrypt for sharing..." feature anywhere.  Am I overlooking the documentation?