Creating different form fields per each ticket

Is there a way to have different form fields for each different type of ticket? For example, we have youth admission and chaperone admission tickets. For chaperones, we need their information such as phone number and email. For youth, we just need their names as more often than not they do not have contact information. When I create these two tickets, the phone number and email form fields display for youth tickets. Since this info is required for chaperones, it's showing up as required for youth, too. This creates confusion when completing the form. I cannot ask different questions per ticket. Is there a way?