Hi there @kbarclay! You are halfway there; if you have a feature disabled and do not want anyone to turn it on at the course level as well, you need to "lock" it. There will be a lock icon next to the enable/disable option- click on it to close the lock so folks cannot toggle the feature in their courses.

Basically, if it is unlocked, the feature defaults to enabled/disabled based on what you put, but folks are still able to change it in their courses. Locking it sets it as the only option.