Generate Collections

Hello!
I'm a new Shareaza-User. I've read on Mainpage that Shareaza supports collections, but i didn't find an option within shareaza. How can i build collections? Is there any tool?
I'm a new Shareaza-User. I've read on Mainpage that Shareaza supports collections, but i didn't find an option within shareaza. How can i build collections? Is there any tool?