A "widget panel" refers to a section or area of a computer screen or user interface where various small tools, utilities, or applications called widgets are displayed for easy access and interaction. Full definition
You can wake up the lock screen, launch BlinkFeed, the camera, or the home widget panel. (digitaltrends.com)
An S Note widget panel provides shortcuts to various S Pen apps, and a notifications panel displays the weather along with any notifications. (bgr.com)
You can add content to this area by visiting your Widgets Panel and adding new widgets to this area. (alidaskitchen.com)