Viewing Customizable Components
If your administrator has added customizable components to your Lightning app or record pages, additional information is displayed as alert or count cards. In addition further information can be displayed in a highlight panel. You can view this information if you have permission to view the corresponding object.
The component displays information that is relevant to your org, such as key performance indicators. Alert cards also contain a link to the related list view. Click View Details to view the associated list view.
Your administrator can also add a Navigation component to page layouts simplifying your navigation experience.