You can use the touchpad that comes with the notebook, press the lower right area of the touchpad (some models are the two keys at the bottom of the touch area), that is, the right button machine, or two fingers at the same time gently the right button menu can be called out in any area of the touchpad. The touchpad under the keyboard area is now standard on laptops, and it's there to deal with the absence of a mouse. Therefore, the basic functions of the mouse touch pad have, and even have many functions that the mouse does not have, such as double finger kneading for pictures or page scaling.
Press the bottom left of the touchpad = left mouse button single machine, press the bottom right of the touchpad = right mouse button single machine, double fingers slide up and down on the touchpad = mouse scroll wheel, double fingers knead can achieve page or picture scaling, etc., because of the different notebook manufacturers may be part of the gesture operation or panel style function will be slightly different, but are much the same. Because the mouse is inconvenient to carry, you should be familiar with some basic operations of the notebook touchpad, which can bring a lot of help in daily use.
The Asus W519L keyboard usually doesn't have a dedicated replacement mouse button. However, some Asus keyboards may come with custom function keys that users can set through software to simulate mouse actions such as clicking or scrolling.
This means that you can assign one of the function keys as the left or right mouse button instead of using the mouse. Although this is not what the keyboard was designed for, users can use this feature to assist mouse operation in some situations.
Just set it up through the corresponding software provided by Asus, and then press the assigned function key to achieve the effect of simulating a mouse button.