Viewing all Classes
To view all classes, make sure the "show all" option is highlighted in each of the four lists to the left.
View Fewer Classes
To view fewer classes, select your interests in the four lists to the left
Highlight More Choices
To highlight more than one choice within a list, click your first choice, hold the Ctrl (for Windows) or Apple (for Macintosh) key, click other choices, then click the "SHOW CLASSES" button.