Yes you can!
Here's how it's done:
- Navigate to Crew.
- Click on the employee you want to remind.
- Find the actual course and click on the context menu (the three small dots) on the right.
- Click "Remind User".
- Fill in a message, on why you are reminding the user (optional).
- Click "Send Reminder".
An email will be sent with you as the sender, containing your contact information and information on the course, and, if you choose it; a personal message from you.