Greetings with my mouse,

I have been trying to remap some buttons on my Logitech MX... mouse. The mouse has Right, Left, Middle, Scroll-Left, Scroll-Right, Wheel and two side (rather top) buttons.
All buttons except Scroll-Left and Scroll-Right (Wheel side mouvement) function well. The side (rather top) buttons works as Back-Forward.

What I have been trying to do is to:
1. Add the function Back-Forward to the Wheel Button to Scroll-Left and Scroll-Right (side movement of the Wheel button.
2. Be able to assign any shortcut to the side (rather top) buttons which at present work as Back-Forward.

I have managed to find my mouse name:

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$ egrep "Name|Handlers" /proc/bus/input/devices | egrep -B1 'Handlers.*mouse'

and... the stairs begin.

I have found within /etc/X11 xorg.config (have to create one) a following setting (adjusted by insetring the mouse name):

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Section "ServerLayout"
   Identifier     "X.org Configured"
   Screen      0  "Screen0" 0 0
   InputDevice    "Logitech USB Receiver" "CorePointer"
   InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

and:

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Section "InputDevice"
   Identifier  "Logitech USB Receiver"
   Driver      "mouse"
   Option       "Protocol" "auto"
   Option       "Device" "/dev/input/mice"
   Option       "ZAxisMapping" "[b]4 5 6 7[/b]"
EndSection


Using a command:

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xmodmap -e "pointer = 1 2 3 4 5 6 7"

with different variations I have discovered that (ftp://www.x.org/pub/X11R6.8.0/doc/mouse7.html) pretty probably the mouse button configuration shall be like this:

1 Left Button Button 1
2 Wheel Button Button 2
3 Right Button Button 3
4 Side Button 1 Button 4
5 Side Button 2 Button 5
6 Wheel Negative Move Button 6
7 Wheel Positive Move Button 7

Alas altering buttons 4, 5 with 6, 7 does not function. I have found that it change or disable Wheel scrolling in one (I cannot remember) direction and transferring it to Side scrolling (the Wheel button as well.

Furthermore I am not certain at all if 'Wheel Negative Move' is Wheel vertical or horizontal scrolling.
As mentioned above as far as I (do not) understand the only mappable buttons are 4, 5, 6, 7.

Here I have finished my adventure with my tiny hard-working mouse with its excellent behaviour under Windows. We are both new to Linux OpenSuse Leap 43.1 / KDE Plasme 5.x (rather x than 5.72) / MX Theme.

We both, me and the mouse will be grateful for any kind help to make us possible to work habitually on Linux. We thank you in advance. Click.