If there are existing classes they will be listed here in a table with the following columns from left to right, Class Name, Order in List, Delete This Class, Edit This Class.
Clicking on the class name will allow you to edit characteristics for that class (see 'Characteristics Tab').
Click on 'Move Up' or 'Move Down' to move the class up or down in the list.
Click to delete this class.
Clicking this will allow you to change the class name.
Enter a name for your new class.
Enter characteristics for this class each on their own line.
ex. Full Sun
Partial Sun etc.