General How-To Guide
Great video that showcase most of the features:
Importing Workouts from another format (erg and mrc)
Select the import function from "Workout, Import". You can import multiple workouts at once using the "Multiple Workouts" option. This option will check the selected folder for all .erg and .mrc files and convert them to .workout format.
Editing an existing workout
Right click on the workout and select "Edit"
Creating a custom Training Plan
Creator a Workout like usual using the Workout Editor, make sure that the Plan name is the same name for all the workouts in the Plan. You will then be able to filter the Workout List using this name.