Answer: Importing a widget json file can be completed in four (4) mouse clicks:
Click the Gear icon
Select 'Import New Widget' from the drop-down menu
Select the json file to be imported
TIP: If the import doesn't populate automatically, try pressing CNTL+F5 to refresh the screen. A CNTL+F5 forces a cache refresh and will guarantee that if the content is changed, you will get the new content.