[Koha] Enabling ICU for not Latin character

[MHE IT admin]

Hi, I think we are missing a ICU for non Latin character in our newly
installed Koha 3.8. I installed Koha-common packaged on our dedicated
server running Debian 6+, everything is working fine. The site is at
http://library.koyauniversity.org/

We miss on our system is a ICU module which helps searching in our Arabic
records. Is there any instruction which can help me to enable ICU after
installing Koha please.?

Is this a valid instruction?

http://kohageek.pbworks.com/w/page/31484686/zebra%20configuration%20for%20regional%20language%20searching

Thank you