there is a model admin section in the cms. for the content authors the model admin section shows up in the sidebar (i´ve set Access to 'ModelAdmin' section in the Permissions for the Group.) But for some reason no DataObjects are displayed. Logged in as admin I can see them all.
EDIT: this applies to GridFields in general: related data objects are not visible in gridfield for content authors. adding the canView function to the dataobject will help.
Thanks, Florian