Acer A517-51P User Manual page 18

18 - Using the Precision Touchpad
3. Select Devices > Mouse & touchpad.
4. Now you can adjust the settings to suit your personal needs. You
can change the primary button for left- or right-handed use, turn the
touchpad off if you prefer to use a mouse, or set a delay to prevent
the cursor from moving if you accidentally tap the touchpad with
your palm while working. Scroll down to see more settings.