Open the admin panel and switch to the chat operation tab
Click on "Take chat offline". You will be asked to confirm the action.
Any logged in users will be logged out, and the default offline message will show.
If you check the 'Show contact form' check-box in the admin panel, and provide a valid email address, a contact form will be displayed to the users.
Plain text or html tags can be entered to customise your offline message.
This can be combined with the contact form to ensure the highest levels of engagement, even when your chat is offline.