Please Explain the Various Form Types, Plus No Validation!

Hello,

I am just starting use of CSS Form Builder and am having problems understanding the Types of fields that may be placed on a form. Is there documentation for the various field Types? If not, can you explain the following:

Checkbox Group:
- I added this to a form but nothing appears other than the label. Plus, what are the min & max fields for?
CVV:
- I added this to a form but I don't get any validation on the contents upon Submit.
List:
- How is the list content defined?
Menu:
- How is the menu content defined?
Password:
- I thought I understood how to set this up but I get no validation upon Submit.
Radio Group:
- I added this to a form but nothing appears other than the label. Plus, what are the Invalid & Empty fields for?
Text Area:
- I added this to a form but I get no validation.
Hidden:
- I didn't try this Type - when is this used and what is the RegEx field used for?

Thanks!