The "Quick Add" map points popup window allows you to quickly add addresses to your map.
Normally when you save a map point the popup window will close after each save, whereas on the "Quick Add" popup window every time you add a pin to the map the window will stay open and the map point list will refresh after each save.
Although you still save addresses one by one you can do it faster. For uploading a spreadsheet data file use the "Bulk Add"
Learn how to bulk add map points.
Quick Add popup window