I have created a sub-section in my course and the students in it are in both the main section and the sub-section. I want to be able to remove them from the sub-section, but it seems to want to remove them from the whole course. I really didn't want it to automatically put new users into both the main and the sub-section, but it's doing that too. Is there a way to make it NOT put people automatically into both sections? And also, how do I get them out of one without removing them from the whole course?