All versions of Windows, practically from its first versions, Microsoft has taken into account that not all people are right-handed, since although to a lesser extent, there are also left-handed people who use the computer. In this case, mouse use can become a problem for left-handed people, a problem found using the mouse.
Fortunately, as I have commented above, Microsoft has taken this into account and within the configuration options it allows us select which is the primary mouse button, that is, the button that we will use on our mouse to click on the applications or documents that we want to open, select the options from the menus ...
But in addition, within the configuration options, Windows also allows us to establish the operation of the scroll wheel, so that we can configure the number of lines that the page will scroll each time we use it, which it will allow us, if we increase the number, move more quickly through the documents or web pages that we visit.
How to change the left mouse button in Windows 10

- First of all we must go to the Windows configuration settings, through the Start menu button and clicking on the cogwheel icon found on the left side of the screen, just below the icon that represents our users.
- Next, we go to the option Devices.
- In the right column the devices of which we can change the operation will be shown.
- Click on Mouse.
- On the left side we go to the option: Select the primary button and click on the drop-down menu that will allow us to select whether we want to set the right button or the left button as primary.