FAQs are meant to clear any and all the doubts that your learners might have regarding your course. So adding a bunch of commonly asked questions at the end of the course will help you answer many of the learner queries without spending a lot of time for it.
So to add the FAQ for your course please follow the below mentioned steps,
Got to your admin dashboard. Click on Courses and go to any course that you want to add FAQ to and click on settings or while creating the course click on settings
Click on FAQ tab from the left panel and then click on ADD FAQ
In the next page add your question and answer and click on ADD