I need to add a spot for people to order a shirt.

The cost of the shirt is added into registration. Just need to know how to add a place for them to put t-shirt size

I checked one of your forms (https://www.jotform.com/92245451006146) and it seems that there is a field (dropdown) for the size of the t-shirt. Are you referring to this form?

A dropdown field seems like a good choice for obtaining the sizes. Do you need something else?

I would suggest you to please explain your question a bit more in detail and we will try to help you.

We will wait for your response.