There is not a built-in, easy to use method for copying changes from one environment to another. This is a very manual process. At a high level, most customers do some variation of this:
[Steps to Repro ] 1. Create a notification, be sure to insert a url link into the email template 2. Trigger the notification. 3. Log in as the user who receives the notification. 4. Open the notification and click on the link.