As you are running your course, you will want to control how people join your online course. For example, during the beginning of the term, you might want to allow anyone to join the site. Then, once the academic year has gotten underway, you might want to change the site to only allow new users with site administrator approval. These changes are available on the User settings page. The settings on this page do not require any changes to run your course effectively. However, these settings allow you to create a more personal feel to your course.