The Experience Manager overview displays all the available Channels for the CMS user. This doesn't necessarily include all the available channels, since some channels might be filtered out for the current CMS user due to (lack of) privileges or other criteria. The actual channel filtering can be enhanced by adding custom channels filters, see Channel Filtering.
Visibility Experience Manager
The Experience Manager is only visible for CMS users who have the feature userrole
The above userrole is required to have the Experience Manager visible, but does not automatically imply the CMS user can see any channels, see below
By default, there are always two built-in channel filters active
- ContentReadChannelFilter : only channels for which the CMS user can read the root content node (eg /content/documents/myproject) are shown
- PrivilegeBasedChannelFilter : only channels for which the CMS user has privilege hippo:channel-viewer on the channel configuration (eg /hst:myproject/hst:configuration/myproject) are shown