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