HOWTO:Change Installed Keyobard Layouts

First, disable the kde keyboard layout from Tasma.

Go to Peripherals - Keyboard layout-then remove the tick from "Enable keyboard layouts"

Then go to start menu-->programs-->system-->more applications-->File manager-super user mode

and type your password. Then paste that in the location bar:

 /etc/X11/

and open the text file "xorg.conf"

Find the section

   Section "InputDevice"
   Identifier  "Keyboard"

Then replace

 Option  "XkbLayout" "[current keyboard layout e.g. "us"]"

with

 Option  "XkbLayout" "[current layout],[other layout]"

You can also choose the key combination for switching the keybord layouts:

   Option  "XkbOptions" "grp:ctrl_shift_toggle,grp_led:scroll"           for intance CTRL+SHIFT

or

   Option  "XkbOptions" "grp:alt_shift_toggle,grp_led:scroll"            for intance ALT+SHIFT

Then save the changes.