I enhance my skill and knowledge of calendar management by self-study and applying it to my self

Utilizing Time Zone and World clock

Add Calendars or Share with specific people and groups

Creating an Invite for meeting with Agenda

Fetch and Insert Google Calendar Events into Spreadsheet Automatically Using codes or language

Creating an Event for Flight by Utilizing the calendar including Travel Time from hotel to airport 2h before the flight, map, and traffic forecast, and from airport to hotel travel time.

I input the map and the traffic forecast so that it's more convenient for my client to maximize and manage his time.

I also input all of the flight information so that my client will be reminded what terminal, seat, and flight number it is.