1. Open the class where you want to assign a co-teacher, and click on the drop-down menu in the uppper-right corner, next to the list of teacher tools:
2. Select "Setup" from the drop-down menu:
3. In the Setup window, scroll down to the "Teachers and Assistants" section, and enter the name of the co-teacher:
4. Scroll to the bottom of the Setup screen and click "Save"