The mouse buttons on an old laptop are no longer working, so I have to rely on tapping on the touchpad. I have tapping enabled in the Synaptics touchpad settings. One-finger tapping works fine for left-click. There's no option to enable two-finger tapping for right-click in the settings, so that doesn't work. I thought the option doesn't exist due to a hardware limitation. However, I know the touchpad can distinguish between the two; the system tray icon shows green on the first finger and blue on the second. Two-finger scrolling works fine as well.
I've also tried running a Linux distro from live media where both one- and two-finger tapping work just fine once tapping is enabled.
It seems a matter of just presenting the option to the user in the synatics touchpad settings. How can I enable it?