Set BusyBox state when any event starts in Google Calendar

BusyBox is a smart status sign for your home or office, letting you effortlessly display your availability, activities, or custom messages on your door. Use BusyBox actions to update your display and automate status changes, helping you stay focused and undisturbed.
Google Calendar is a free time-management web application offered by Google. Turn on Applets to add the most important information, right into your calendar, automatically — and get custom notifications about the events that matter the most to you.