A) During customization of your Aero Checkout template, you can show/hide the widgets as per your choice from desktop / mobile view.
B) You can also change the ordering of widgets by dragging them easily.
2) Find Option here
Under the design tab -> Pre Built Checkout Page > Your selected template’s Customize button > Widget Visibility
3) To hide any widget
To hide any specific widget click on the eye icon of a widget title.
4) Re-position the widget
You can also re-position the widget on Aero Checkout page by dragging the handler of the widget.
5) Widgets on Mobile view
You can re-arrange the widget for mobile specific from here