Yes, the users can add subgroups without being members, if I don’t hide the flat group list.
When the users can create groups when they join to any group, and those groups are available in the main group list page, inside the parents groups.
Other thing that is wrong is that the tab “groups” doesn’t appear properly. When I choose other tab, the color of the tab follows the color of the page. But, the “group” tab doesn’t do that. It keeps its color. I have the default theme.
