The “Drag-n-Drop” feature allows you to click on any event in your Calendar and drag that Event using your mouse from one day to another, from one time to another, and change how long that Event lasts. This feature is available in Day, Week, Month, Event, Side-by-Side, and Year Calendar Views and you will be able to tell that this feature is active when you scroll over an Event and see a dotted line appear around that Event.

If you want to make sure that you don't accidentally drag an event to a location, you can turn on a feature in your "Customize" screen where you will always see a pop-up notice to confirm your changes. By default, this feature isn't turned on in your calendar. See the image below:

To turn on this pop-up notification for when you use drag-n-drop to move events, follow the steps in the image below: