Close the system preferences and you will see that immediately, the tap-to-click gesture will be enabled on the MacBook and you can now simply tap on the trackpad to select an item on the desktop.
There are a host of gestures available for the MacBook trackpad and you can enable or disable them based on your preferences. That said, the same gesture also applies to an official Apple magic trackpad that you have attached to your Mac or MacBook. When we discovered this small toggle, we immediately turned it on and it has absolutely enhanced the MacBook experience for us, and we are sure it is going to do the same for you.
