How to second-click by Shift+F10 in Debian?

I am having too many artifacts when doing right click (second click) of mouse with the touchpad of UX303UA in Debian 8.5, which is problematic in inspection etc with Mathematica. **Goal to fix**: Default Shift+fn+f10 to bring the mouse second click does not work in my hardware (don_crissti) Characteristics of the system - Inspecting the keystroke Shift+fn+f10 with xev KeyPress event, serial 33, synthetic NO, window 0x2200001, root 0x19a, subw 0x0, time 60929622, (375,-9), root:(476,157), state 0x0, keycode 50 (keysym 0xffe1, Shift_L), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyPress event, serial 36, synthetic NO, window 0x2200001, root 0x19a, subw 0x0, time 60931790, (375,-9), root:(476,157), state 0x1, keycode 121 (keysym 0x1008ff12, XF86AudioMute), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyRelease event, serial 36, synthetic NO, window 0x2200001, root 0x19a, subw 0x0, time 60931880, (375,-9), root:(476,157), state 0x1, keycode 121 (keysym 0x1008ff12, XF86AudioMute), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False - *Settings > Mouse & Touchpad* does not have anything relevant about fn keys. Fig. 1 Pressing literally fn+F10 opens a tab in Google Chrome/Matlab/...; while pressing fn+shift+F10 does nothing OS: Debian 8.5 Window manager: Gnome 3.14 Hardware: Asus Zenbook UX303UA Linux kernel: 4.6 of backports Mathematica: 11