How do I create an option to address multiple registrants?

I created a summer camp registration form and some families may want to register multiple children.  How do I create the option for registering multiple siblings under the same form without a parent having to submit an entirely new application for each sibling?

Hi asopofcharlotte,

You can do it with conditions.

First, you should add a field to ask how many child will attend and duplicate same field for example: Child's Name

Then click conditions

Select Show / Hide a form field then click next and set your conditions rules

I guess you understand the logic. 

You can also use widget which named Dynamic Text box. However, I guess conditions are more useful for you.

If you have any questions please feel free to ask.

Thank you

This was super helpful... Thanks!

Hello asopofcharlotte.

I tried the suggestion of JotForm support evren but I used a matrix field instead. 

Here's the trial form

It's really amazing how JotForm makes form-creation easy :)

Like for this example, discounting 20% for the succeeding child?

The output can be manipulated using Form Calculations. 

* I'm rusty on calculations, so pardon the redundancy of my formula. Please feel free to modify.