New user Question About Workout Builder

I am going to be using TrainerDay builder and existing workouts primarily with TrainingPeaks. Are all of the features such as HR targets, slope, etc, primarily oriented to utilizing the TrainerDay app to perform workouts? Anjother way of asking this is what features in the TrainerDay Builder will function in TrainingPeaks and Indoor training with a Smart Trainer? These workouts would be done on Zwift, primarily.

No Zwift nor TrainingPeaks supports HR targets or slope targets like our app does. You can create HR workouts that go to TrainingPeaks but not auto HR like we have, and that won’t work in Zwift as far as I know. You can use our app to control the trainer and still ride in Zwift if you have Ant+ with Zwift. This is what many people do.