How do you handle and conditions

Do you want to set conditional logic inside of your form? Inside of this guide you can find out how to use conditional logic inside of your forms: 

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

If I did not understood your question correctly, please explain in more details what you are trying to achieve. Also please provide us ID of the form you are working on.

Let us know if you need further assistance.