Below are the instructions for setting up an external tool link to a course.
If you have not setup an external tool in Moodle, please follow THESE INSTRUCTIONS.
Step 1: Go to the course where you would like the link, and Turn On Editing.

Step 2: Click Add an activity or resource.

Step 3: Search for External Tool in the popup, and click on the External Tool activity in the list.

Step 4: Give the activity a name and choose VirtualJobShadow.com external tool from the Preconfigured tool dropdown. Then Save.
- Activity Name = VirtualJobShadow.com
- Preconfigured tool = VirtualJobShadow.com

You should have completed add a link to a course in Moodle.