How can I limit the number of available spots in my registration form?

Hello! 

I am attempting to build a 'register and pay' form for dog training classes. 

There is a limit to the number of people who can participate in each class. 

I'd like this to be a part of the form, so people know to look for another date if the course is full. 

Do you have a form I can use for this purpose? 

Yes, you can do this. You should use the Inventory widget or the Quantity Gift Registry widget.

The Quantity Gift Registry widget is good for forms that have a limited list of items, which need to be picked or selected. When the items on the list have run out, the widget will cross out the item as unavailable.

You can find the widgets here:

https://widgets.jotform.com/widget/quantity_gift_registry

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

You can also check and follow this guide:

https://eu.jotform.com/help/426-How-to-Setup-a-Payment-Order-Form-with-Limited-Stocks

Let us know if you need any further assistance.