The bike workouts in your training plan are created using the Workout Builder function in TrainingPeaks. This enables you to export your bike (using power) workouts to Zwift.
Connect your TrainingPeaks account with your Zwift account on the "connections" page in your Zwift settings. Any bike workouts that are scheduled for the current day will then appear in the "TrainingPeaks Custom Workouts". Check the screenshot below for how to find your MyProCoach workout on Zwift:
Alternatively, each Training Peaks workout has an "export" button that looks like an upwards arrow. Once you export a workout from Training Peaks, you can then choose it on Zwift.
You can also view the TrainingPeaks help centre for assistance regarding Zwift: Zwift and TrainingPeaks
Copyright MyProCoach™ Ltd © January 2020. All rights reserved.