This policy setting controls whether 2007 Office users can change permissions for content that is protected with Information Rights Management (IRM).
The Information Rights Management feature of the 2007 Office release allows individuals and administrators to specify access permissions to Word 2007 documents, Excel 2007 workbooks, PowerPoint 2007 presentations, InfoPath 2007 templates and forms, and Outlook 2007 e-mail messages. This functionality helps prevent sensitive information from being printed, forwarded, or copied by unauthorized people.
If you enable this policy setting, users can open and edit documents for which they have the appropriate permissions, but they cannot create new rights-managed content, add IRM to existing documents, change existing IRM permissions, or remove IRM from documents.
If you disable or do not configure this policy setting, 2007 Office users can add, remove, or change IRM permissions for documents if they are authorized to do so.