Tap the touchpad once with one finger
Press the lower-left area of the touchpad
Use an external mouse and click the left button
If tap-to-click is enabled, tap once to left click
If using a touchscreen, tap once on the item
Tap the touchpad once with one finger
Press the lower-left area of the touchpad
Use an external mouse and click the left button
If tap-to-click is enabled, tap once to left click
If using a touchscreen, tap once on the item