I can't get it to work. I had very high hopes for this add-on, but it is NOT intuitive. If anyone out there who loves it wouldn't mind giving a brief tutorial, I sure would appreciate it. When I add a page to a group, it creates a bookmark; that's not what I want. I'm trying to reduce the number of bookmarks I have. When I close a tab it seems to delete if from the group. That's absolutely not helpful. If I'm just using the tool incorrectly, I'd like some direction.