add custom workout naming for fitness workouts

I've read some old post before (e.g. 6y old ) regarding the custom naming of the exercise in the workout.

Not all exercises are available to chose from and sometimes it's shown in English, sometimes its shown in Dutch (my watch is set in Dutch).
It would be wonderful to custom name the exercise I want to use and include for which area the exercise is supposed to train.
This would mean I no longer have to track the progress from a written agenda and would help the overal tracking of the workouts.