Under Administration > Security > Global Groups the groups have an checkbox field labeled "System Group", what is this?
I can not find any references to this in the online documentation. Is there a more detailed document available for groups and permissions and how they related to projects?
In Gemini 4.2 this option was used to indicate a group that could not be deleted. It was implemented to prevent people from accidently deleting core groups.
Obsolete setting in Gemini 5.x