Adding the exit button
There are times when we need to create content which is potentially sensitive and could put the user at risk if they were caught viewing this content. An example scenario would be a vulnerable person viewing content about domestic violence and needing to quickly close the page down if the perpetrator enters the room.

Where to add the exit button
To add the exit button, go to the last tab on the page you're editing.
You will have the option to add a url (in this example, I have added the BBC weather site, as neutral, unrelated content).
You also need to make sure you select the option to show the exit button.