How to enable keyboard auxiliary items in Win10

The keyboard and mouse are the input tools of the Win10 system. If the mouse suddenly fails and cannot be used, it can only be relied on by the keyboard. Of course, Win10 is not installed on the touch screen device and cannot be displayed by finger touch. Win10 can't use the mouse and use the keyboard's auxiliary options. How to operate?

Methods/steps
The main method is to use the up, down, left and right, carriage return, and space on the right side of the keyboard to open the auxiliary options.
First press the WIN button on the keyboard, then press the close menu.

Then press Shift+Tab to return the focus to the WIN icon
At this point, press the right button of the keyboard to call out the menu and select [Control Panel]