Enable horizontal scrolling with two fingers on touchpad and disable while typing in Lubuntu (solved)

I leave the solution as I struggled to find it, if it serves a community partner.

type in terminal:

sudo leafpad /etc/xdg/lxsession/Lubuntu/autostart

adding at the end these two lines:

@synclient HorizTwoFingerScroll=1
@syndaemon -i1 -d

save and exit.
The first line was to activate the horizontal scroll with two fingers, the second to disable the touchpad while typing.

I hope it is useful

A greeting