What roles are needed to use WPC?
The WPC_Editor role is the only one needed to create content in WPC. Of course, other roles can be created and used for end users. The Content Administrator role is required to connect the navigation structure (navigation.wpc) of a website to the role or workset in the PCD. This connection is only done once per web site. All subsequent changes to the navigation are done in WPC by the Web Content Managers.