You can tap your mouse to click or change the direction you scroll. Here's how:

1. At the bottom right, select the time.
2. Select Settings .
3. In the 'Device' section, select Mouse.
4. Change how your mouse works:
   • Swap your primary mouse button.
   • Turn touchpad acceleration on or off.
   • Adjust how quickly your pointer moves: Move the sliders next to 'Mouse speed'.
   • Choose the type of scrolling
     • Turn off reverse 
     swipe up to move the page up.
     • Turn on reverse
     swipe up to move the page down.