Two workouts in one run

Garmin supports running workouts from your training calendar.  I do not think Garmin supports ending a workout and subsequently starting another workout within the same run. 

My current work around is to end my run and being another run that uses the second workout.  Another work around might be to manually merge the workouts on my calendar into one run. 

I would prefer the ability to start a new workout, within the same run, without ending my run.  Does Garmin somehow support this? 

Right now I'm following the Garmin Marathon Level 3 HR-based program that has two back-to-back workouts on most days.