Chat Status feature allows you to control the visibility of the widget on your website. You can location this option under the Manage section.

Login - > Go to the chat status page from the main menu.
 

Hide widget when no agents are available:

When all the agents are offline,

• To hide the widget automatically set this option to ON.
• To display the Offline form, toggle it OFF.

If you have Work Hours enabled on your account, the widget will work per this setting.

Enable chat widget:

To show/hide the chat widget manually, set this option to ON/OFF.  When you toggle this option OFF during an ongoing chat, the widget will be available for the customers to chat until chat conversation ends.

Note: Since the "Enable chat widget option" has direct control to hide the widget, it takes precedence over the "Hide widget when no agents are available" option.