Closing Widgets
If you decide your want to close a widget (this just removes it from your Dashboard view—it doesn’t remove the widget from your computer), first press-and-hold the Option key on your keyboard, then move your cursor over the widget you want to close, and a small round button with an X inside it will appear just outside the top-left corner of the widget. Click on that X to close the widget. To bring that widget back again, click the Open (+) button in the bottom left of your screen to bring back the Widget Bar, then click on the icon for the widget you closed.