Dashboard: Edit Existing Widget
To Edit an existing Widget, long press on the widget to be edited, wait for the menu to appear, click Edit.
Tap in the name area of a widget to bring up the menu.
Select "Edit Widget" to bring up the Edit sheet.
From here you will see a sample image of a widget. Clicking on various areas will hide/show different properties of the widget.
Click "Save" in the upper right corner to save your changes or "Cancel" in the upper left corner to discard your changes.
You can also adjust the width of the widget. You cannot adjust the height.