How can we include a cut off of registration when we meet capacity?

Hello ODAADMD,

You can set your form to disable after reaching the number of submissions.

To do this, you will need to edit your form and go to Preferences 

Under General tab, go down to Status and select Disable on submission limit 

A new field will appear and enter your maximum number of submissions before it gets disabled.

Lastly, click the save button and you're done.

You can also learn more about submissions limit settings by visiting this user guide: https://www.jotform.com/help/137-How-to-limit-submissions-in-a-form 

If you have questions, please let us know.

Thanks.