[Koha] select icu in Instance Creation

[Karam Qubsi]

hi when I'm following the instruction here :
http://wiki.koha-community.org/wiki/Koha_on_ubuntu_-_packages#Instance_Creation

I didn't found anything to tells koha I want to use icu chain with zebra

How to tell this to koha ?

or I have to make this manually ?

in the tarball<http://wiki.koha-community.org/wiki/Koha_on_ubuntu_-_tarball>installation
we can chose this easily but here this is not clear

Thanks :)
Karam