How to show and hide fields base on dropdown selection?

When I have a drop down option for my clients, and I want those drop downs to generate another field..where are those options to do that? Thank you

You can show and hide the fields by using the conditional logic. I've cloned your form and made a sample. You can check it here https://form.jotform.com/80675301841959.

Let us know if you have any questions or if you need further assistance.