Not sure what you mean. The Help! page provides a few examples of how to use the default (preset) and custom (per your form) variables in your email message configuration.

John said:

The help file tells us how to configure things like pull down menus, but it doesn't tell us where to configure them.  I can see how to state the list for the pulldown menu, but what file do I go to, where in the WP control panel, do I go to put in the desired info?  The help file does not tell us this.

On the same level as the Help page you'll find a cformsII page (1st menu item), titled "form settings".

Scroll down to "Form Input Fields" and add as many addiitonal fields as you require. You can drag & drop them for proper order and configure them to your needs: ie. give them a new field name (may just be a name or a more complex expressions depending on how you want to configure this field as explained in the Help section) and choose the right field type.

Update all settings and test.