Can you show me samples of how this can be used ?

I would suggest you to take a look to our templates page, will find a lot for forms that were already created and shared by our JotForm users: https://www.jotform.com/form-templates/

You may find a form that you may want to implement on your end, you could use a template by following this guide: https://www.jotform.com/help/106-How-to-use-the-form-templates 

You could also share us the details about what you would like to achieve on your form and we will be glad to help you creating it.