You should add this somewhere in the user's manual.
Saving Your Favorite Clips
To add a clip to you favorites:
1. Open the CHS main window.
2. Select the Favorite? checkbox next to the clip.
Note: If the Favorite? column is not visible, click on the small icon to the left of the Title column and select the checkbox next to Favorite?.
For some reason, the Favorite column was not visible by by default. I think you should have it shown by default.