JOIN Plan is not available as part of the JOIN mobile app. It is a separate web-based tool that you access from a browser on your computer or tablet at plan.join.cc/login.
You log in by scanning a QR code with your phone. Once logged in, JOIN Plan works in your browser and gives you a broader view of your training data, including your calendar, fitness history, power records, and activity detail.
Your day-to-day training, feedback, and plan management all stay in the JOIN mobile app.