1. Select the message you wish to create
2. Enter text of the message. Click "Next Step"
3. Enter the URL of the page you wish the message to be displayed on.
Note: Make sure you don't enter a URL which redirects. It's best to copy the URL of the webpage you desire. Many URL's starting with www. or http:// actually redirect. For instance yonderhq.com redirects to "https://www.yonderhq.com"
4. Publish live
If you navigate away before publishing live the changes will no be saved