I hate to ask the obvious but where do I enter the variables for Radio Buttons and Multi Select Boxes?

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.

That doesn't help because I can set a field as a "Select Box."  However, that screen does not let me enter the data the select box is to contain.  Where do I enter that data?

From the Help page:

Supported form input fields
All supported input fields are listed below, highlighting the expected formats for their associated Field Names.

Note: While the Field Names are usually just the label of a field (e.g. "Your Name"), they can contain additional information to support special functionality (e.g. default values, regular expressions for extended field validation etc.):

Select boxes & radio buttons: 

Format:     field name # option1|value1 # option2|value2 # option3…
Example:   State#Georgia|GA#New York|NY#California|CA#….

The entire (extended) text string goes into the field name.