Deployment message

When I push a Windows package I can set my deployment policy to Notify users about deployment or not and I can customize the message if I choose to notify. When I create a configuration and set the Package settings / install options to Run as a user, the package is deployed with the deployment policy along with or without Notifying the users about deployment, but then a second notification window is displayed with generic message about New Software is Available, "Desktop Central has been configured to install the Software on this computer" with a 5 minute count down. I can't seem to find where to configure this notification box to customize text or to turn it off. Could you point me to where this is? Thank you.