[Koha] extended patron attribute types

We would like to use Extended patron attribute types as read about in the Koha 3.0 manual. We are running Koha 3.0000067 with Ubuntu and can not find any place to turn it on. We've followed the manual guidelines but don't see it as an option. Is it not available in the version we have? Thanks for any help. Carol @ My Library -- supporting Lao youth in their quest for a brighter future... www.thelanguageproject.org