Hello there,
I have a Slimbook Executive 14" and when I bought it, I realized I could lock and unlock the touchpad by tapping on the top left corner. It also has a led that was on (red) or off when the touchpad lock and unlock.
At some point, I don't know if it was before starting to install Arch Linux or later on during the installation (this is taking me quite a bit of time because I'm doing it in my spare time and doing all the configurations manually, you probably know what I meant when I mentioned Arch), I realized that I could not lock it anymore.
I tried to double-tap it in the corner, but nothing happened, so I wonder if I need to install some drivers to make it work again.