The Correct way to do this is to click on 'My Workouts' at the left of the window. Then add your workout and click on Save. You don't have to save it to the calendar.
If you refresh the list on the left you will see your workout.
The other way, there is no workout category loaded, so CT saved the workout but you can't get at it.
I took out the right-click on a day options for now.