The unit planner is only available in Cc Pro.
While on the unit planner, select "View Outline." You can then select any lesson and begin planning as if you were in any other calendar view. Add cards, text, attachments, etc. at any time and it will update in all locations in your planner.
Note: The unit planner is only available in Cc Pro. Click here to learn how to sign up for a 30-day, FREE, trial.