Creating a Trigger from a new event appearing in Calendar

Using: Google Calendar Integration

Background: I run HASS to automate my small 8 room hotel. Each guest booking is already added to my calendar when confirmed, I would like to automatically create an additional new event per booking received for housekeeping to prepare that room on the day the booking is confirmed to begin.

E.g. Room 1 receives a calendar booking for 10/5/24 until 15/5/24 , so create a new event in the housekeeping calendar “Prepare Room 1” for 10am until 11am on the 10/5/24.

Can anyone advise on the cleanest / most efficient means to achieve this? I’m most unsure of the best way to trigger when a new event has been added to the calendar via external means.