Thinkpad T480 touchpad: enable vertical scroll (no DE), which config to use?

I don't know if im using libinput or synaptics cause i use both at the same time. **Xorg synaptic config**

cat /etc/X11/xorg.conf.d/70-synaptics.conf 
# Example xorg.conf.d snippet that assigns the touchpad driver
# to all touchpads. See xorg.conf.d(5) for more information on
# InputClass.
# DO NOT EDIT THIS FILE, your distribution will likely overwrite
# it when updating. Copy (and rename) this file into
# /etc/X11/xorg.conf.d first.
# Additional options may be added in the form of
#   Option "OptionName" "value"
#
Section "InputClass"
        Identifier "touchpad catchall"
        Driver "synaptics"
	MatchDevicePath "/dev/input/event*"
        MatchIsTouchpad "on"
        # OWN SHIT
        Option "PalmDetect" "1"
        Option "PalmMinWidth" "3"
        Option "PalmMinZ" "50"
        Option "VertScrollDelta" "30"
        Option "HorizScrollDelta" "500"

# This option is recommend on all Linux systems using evdev, but cannot be
# enabled by default. See the following link for details:
# http://who-t.blogspot.com/2010/11/how-to-ignore-configuration-errors.html 
#       MatchDevicePath "/dev/input/event*"
EndSection

Section "InputClass"
        Identifier "touchpad ignore duplicates"
        MatchIsTouchpad "on"
        MatchOS "Linux"
        MatchDevicePath "/dev/input/mouse*"
        Option "Ignore" "on"
        # OWN SHIT
        Option "PalmDetect" "1"
        Option "PalmMinWidth" "4"
        Option "PalmMinZ" "50"
        Option "VertScrollDelta" "30"
        Option "HorizScrollDelta" "500"
EndSection

# This option enables the bottom right corner to be a right button on clickpads
# and the right and middle top areas to be right / middle buttons on clickpads
# with a top button area.
# This option is only interpreted by clickpads.
Section "InputClass"
        Identifier "Default clickpad buttons"
        MatchDriver "synaptics"
        Option "SoftButtonAreas" "50% 0 82% 0 0 0 0 0"
        Option "SecondarySoftButtonAreas" "58% 0 0 15% 42% 58% 0 15%"
EndSection

# This option disables software buttons on Apple touchpads.
# This option is only interpreted by clickpads.
Section "InputClass"
        Identifier "Disable clickpad buttons on Apple touchpads"
        MatchProduct "Apple|bcm5974"
        MatchDriver "synaptics"
        Option "SoftButtonAreas" "0 0 0 0 0 0 0 0"
EndSection

**Altough i set the scroll speed with this script**:

#!bin/bash
# MOUSE SCRIPT
# xinput, permanent, run at startup
# touchpad scroll speed config

# >> TOUCHPAD
# Scroll speed
xinput set-prop "Synaptics TM3276-022" "Synaptics Scrolling Distance" 300, 100

# >> TRACKPOINT
# Scroll speed
xinput set-prop "TPPS/2 IBM TrackPoint" "libinput Scrolling Pixel Distance" 50

**And i set the trackpoint speed with this script**

#!bin/bash
# Trackpoint speed controll config
xinput --set-prop "TPPS/2 IBM TrackPoint" "libinput Accel Profile Enab
led" 1, 0

xinput --set-prop "TPPS/2 IBM TrackPoint" "libinput Accel Speed" 0.40

**Any idea which config to use or which is the config the system uses?**