How do I set entry limits on specific fields in questions?

I would like to set a limit on the number of entries for a checkbox question option. For example on this form specifically, I would like to set a limit when 5 people check "parking team" and make that option no longer available once this number has been reached. 

We have several widgets that will allow for setting a specific number of times and option can be selected.  Here are those widgets:

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

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

http://widgets.jotform.com/widget/gift_registry

http://widgets.jotform.com/widget/appointment_slots

The appointments slots widget would likely be the best for your use case.