In order to Add Video from your Human Focus Library:
Go to Content Builder > Select an e-Folder or select Create an e-Folder
Select a course
Ensure Maintenance Mode is enabled to prevent user access whilst you're editing it.
Click Save
Go to the Video Section of the media column
Click on the Plus icon and Add from Library
Search for the video. Watch the video on the right
Hover over the video and click the Plus icon to select it
Click Add Video(s)
The video will be added to the Video Section
Drag the video from your Video Section to the Course Content