1 – Go to Management and select Warnings.
2 – In the Applet Closed tab, write the desired URL (don’t forget the “http://”). You can decide if the URL will be presented everytime or just when the clients closes the session without intention. Enable the box and save the changes.
3 – Now that the information has been saved with sucess you can close the window and test the URL.
4 – Depending on the warnings that you’ve set previously, when you close the session the URL will be shown.