Useful Things Instructors Can do With Roles

Introducing a New Feature — Instructors Can Manipulate TA and Guest Roles

See this article for helpful tips: http://docs.moodle.org/en/Useful_things_a_teacher_can_do_with_roles

Many times, instructors use enrollment keys to give access to individuals who are not part of their UCLA roster (guests). This method can cause unexpected problems, and oftentimes, instructors are unaware of the consequences of using enrollment keys and how that impacts their class. UsingIn Overrideplace Permissionof forenrollment Guestskeys, manipulating the Guest Role may achieve the same objectives. Please talk to your instructors about their goals and keep this new feature in mind. It may help solve their problem.

There are many other use cases for this feature. Please refer to the above link for more ideas and detailed instructions.