You have the ability to prevent any of your Events from overlapping on your calendar by turning on one simple feature in the “Customize” screen. For example, if you create one meeting that starts at 8:00am and then try to create a second meeting that starts at the same time on the same day, you will see a pop-up error message on your calendar that prevents you from adding this event. This helps you not to book multiple events that start at the same time and date.
To learn how to keep your Events from overlapping, follow the steps in the image below: