How to add the same fields on the form more than once in crm 2011 on premise.

Hi All,

I have a form with three fields, all are text fields, they are:

Item

Quantity

Color

A user may want to add more than one item and ultimately quantity and color. Is there a way where I can show the same fields as many times as a user would want it? For example after adding one item the user may want to add another. How do I achieve this functionality?