Edit .config/lxqt/globalkeyshortcuts.conf Remove the lines about the Super Key
[Super_L.33]
Comment=Show/hide main menu
Enabled=true
path=/panel/mainmenu/show_hide
Edit .config/openbox/lxqt-rc.xml and .config/openbox/rc.xml Add :
<!-- Personal Keybindings -->
<keybind key="W-Left">
<action name="UnmaximizeFull"/>
<action name="MaximizeVert"/>
<action name="MoveResizeTo">
<width>50%</width>
</action>
<action name="MoveToEdge"><direction>west</direction></action>
</keybind>
<keybind key="W-Right">
<action name="UnmaximizeFull"/>
<action name="MaximizeVert"/>
<action name="MoveResizeTo">
<width>50%</width>
</action>
<action name="MoveToEdge"><direction>east</direction></action>
</keybind>
<keybind key="W-Down">
<action name="Unmaximize"/>
</keybind>
<keybind key="W-Up">
<action name="Maximize"/>
</keybind>
Open the Terminal
openbox --reconfigure