Import Training Plan Into Garmin Connect. It’s that day that the tacx app/platform will utilize the garmin connect backend as opposed to the tacx one. There is a trick to achieve what you want.

Create structured workouts using the trainingpeaks workout builder or apply a training plan from the list below. Open up the garmin connect phone app and look for training in the dropdown menu. Now, your workouts recorded with your garmin watch will automatically be sent to today's plan.