How do I delete a non-editing staff member who was accidentally added to my course?
If you have access here are the steps.
In your course click on the People navigation area
Find the person, click on the three dots on the far right for that person and select Remove from Course.
By default if you are a teacher in the course you should have access to do this, but if your school has customized permissions at all you may not. At my school for instance a teacher would not be able to do this but an Admin could.
Retrieving data ...