To change the role from the default role (student) to Teacher:
1. Go to Administration and click on "Users"
2. Select the Teacher(s) and click "Edit Role..." on the purple menu that appears.
3. In the pop-up dialog, change the role to "Teacher" in the drop down menu and click "Save changes"
That's it! Your user list should automatically update, and the Teacher's role has now been updated.
NOTE: Depending on the permissions available to this role, you may be able to perform the following functions:
1. The admin panel
2. Create groups
3. Administrate users (Invite students, assign/unassign students)
4. Create assignments