QuickViews are shortcuts to the data of interest to you.
To change your QuickViews, you must be logged in to HealthMap. Once you are logged in, you will see a "manage" link next to the QuickViews tab. That utility allows you to delete or reorder your QuickViews, or to add a QuickView that other users have created/contributed to the community.
To make your own QuickView, you first have to conduct a search (either via the search box at the top of the page, or via the "advanced search" options). You will then see the map and 'Alerts Now Showing' list update to reflect your search. Below the QuickView buttons, you will have the option to save the view. The exact view of the map will be saved for future use, including the zoom level and map type should you prefer to change those controls.
Your "home" QuickView is the one you position first in your list. This will be the view of the map and 'Alerts Now Showing' list that you see by default upon visiting HealthMap (when you are logged in).