How do you create a sign up sheet where there are limits to how many can sign up

We are a dog training company that needs to have clients choose a link so that we can have only 10 sign up for group classes. How do I make this happen with the Free option you have?

I have checked your form and it seems you have enabled the submission limit in your form.

You can also use the inventory widget to have a quantity limit.

https://www.jotform.com/widgets/inventory

Please check it out and let us know if you need further assistance.