Staff with Subjects
Assigning a teacher to a course and classes is ideal because a teacher can filter the Manage Enrollments page by only courses and classes to which s/he has been linked. S/He will then find all of their own enrollments to manage and review. This works best during schools set up sections for each specific teacher. A teacher would see all courses assigned to students in the group, not just courses s/he is responsible for managing.
Staff with Classes
Assign teachers to their classes by clicking in checkbox as we see below: