I'd like to know a little about the way that functional features of content navigator can be granted or denied for specific groups of users or all users. I hope you can help

1.We have removed items from the content navigator menu in order to prevent users from using those features. One was the copy feature. Since then, we've noticed that users are still able to create a copy somehow using the drag options available. Hence the question about how best to limit a particular feature such as copy.

There is no out of box settings for ICN to disable DnD features. But a plugin can override some methods related to content list modules to disable dnd feature in file list. For example: ecm.widget.layout.BrowsePane.js -> getContentListGridModules method, there is a "DndRowMoveCopy" module added. Remove it will disable Dnd in browse pane content list.