I have updated from PCLINUXOS 2009 to PCLINUXOS 2010 having old machine P2-400 I am using LXDE edition.
I could setup Czech qwerty keyboard (via desktop GUI config) but I do not know how to set up two keyboard layouts (maps) and configure their switching by simultaneous press of keys ALT+SHIFT in PCLINUXOS2010.
The configuration was done by modification of file /etc/X11/xorg.conf in PCLINUXOS 2009:
Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
option "CoreKeyboard"
option "XkbRules" "xorg"
option "XkbModel" "pc105"
option "XkbLayout" "us,cz(qwerty)"
option "XKbOptions" "grp:alt_shift_toggle,grp:switch,grp_led:scroll"
EndSection
The above mentioned configuration of keyboard no more works in LXDE 2010.
Even, there is no input device section related keyboard in xorg.conf LXDE2010 / its manual addition has no impact.
Please could you point to any documentation related keyboard config in PCLINUXOS 2010 (LXDE - having old machine really do not preffer to install additional SW / manual config is sufficient) //I have even no idea where is the current X keyboard config stored // give me any working example for dual keyboard layout config in PCLINUXOS 2010 LXDE?
Finally, after some googling, I found a solution.
Equivalent parameters are now located in file
/etc/sysconfig/keyboard:
XkbModel=pc105
XkbLayout="us,cz(qwerty)"
KEYBOARD=cz_qwerty
XkbOptions="grp:alt_shift_toggle,grp_led:scroll,compose:rwin"
KEYTABLE=cz-lat2
Hopefully, this will help somebody else

.