The unit planner is only available in Cc Pro.
There are a few ways you can change the title of a unit.
Click on the unit, this will cause a unit information bar to pop up. From here, you can click the title and change it to anything you want.
Alternatively, you can change the title by going to "View Outline" and then clicking on the unit title.
Note: The unit planner is only available in Cc Pro. Click here to learn how to sign up for a 30-day, FREE, trial.