I need to change the email for JotForm submission for only some of the forms. How do I do that?

My understanding is that you want to change the email recipient of the notification email. If yes, then please follow the steps below:

1. In the Form Builder, click the "Settings" in the top menu. Go to the "Emails" section. Select the Notification and then click the "Edit" button. 

2. Go to the "Recipients" tab. Here you'll see the Recipient Emails where you can add or remove a recipient.

3. Click the "Save" button when you're done.

Related user guides: 
Setting-Up-Email-Notifications
Send-Notifications-to-Multiple-Recipients

Hope that helps. Thank you.