How can I use the conditios wizard

Here is a general guide on how to use the conditions wizard.

http://www.jotform.com/help/57-Smart-Forms-Using-Conditional-Logic

If you happen to have the new wizard, you should see basically the same options, but with a better graphic design:

For example if you choose the "Show/Hide" fields option, another wizard will appear and you must establish it accordingly.

You can explain your specific scenario so we can further assist you.