Libreoffice Extension

OS=Ubuntu 12.04(64bit)
LO=3.5.2.2
Extensions for Libre Office Suite for all Fat Clients
Download and save extension where you want.
1. Now open Libre Office or Calc and
go to Tools->Extension Manager and Add the downloaded extension.

2. Now go to
cd ~/.config/libreoffice/3/user/extensions/tmp/extensions/lubqfqmc.tmp_
you will find a file and directory with the name of extension. Copy both File and directory in chroot i.e /opt/ltsp/ubuntu64bit/amd64/usr/lib/libreoffice/share/extensions/

3. The owner should be root & permission should be 755 for directory and 644 for  file.