[Koha] Attaching Patron Files in Koha 3.12

Hi Koha experts, I see attaching patron files feature is available in Koha 3.10: http://www.youtube.com/watch?v=RxYNp3E76yI But seems not in Koha 3.12 (?) http://goo.gl/9DJYAq Is it disabled by default or removed on purpose? Thanks advance. Best regards, -- Andi Sugandi.