New computer and I have tried all kinds of drivers and wasted a few hours trying to get the settings tab to show up. Oddly enough when Win10 came out I had the same issue on my girlfriends Acer, but a few days later a windows update came out and the tab was back and we could adjust the settings. No luck on this new Acer. I want to be able to adjust the settings like this video shows.
http://acer.custhelp.com/app/answers/detail/a_id/25936/~/elantech-driver-touchpad-settings