Category Editor helps to define your own types of project, general task and notes. You'll also have an option to color code defined categories.
To add a category, follow these steps below:
Go to Settings tab
Click Category Editor from left navigation.
Click 'Add New' button.
New entry option will be added. Input a category name (and assign a color if you wish to).
Click 'Save' button.
To edit or delete a category, just hover your mouse over each category name.
'Edit' and 'Delete' icon will be displayed for selection.