A new extension type, on-main-widget-display-actions (MWG), lets administrators and integrators display up to three custom widgets directly inside the Rainbow application. This creates a practical way to connect Rainbow with external business modules such as door entry controls or company-developed tools. The feature is available on Desktop, Web, and Microsoft Teams, supports up to three extensions, and allows a custom title, tooltip, optional configuration URL, command execution, and rendering in Markdown, JSON, or Adaptive Card format. When a config URL is defined, a settings icon opens the related external configuration page.