Attachments - How?

I have a new-to-building question...

How do attachments know where they're supposed to attach. I have number of things that I can just drop on my AV and they go straight to where they're supposed to be, but I can't tell how they do it. Nothing in the contents tab... If I want to create a necklace or a coronet, how do I tell it to attach to my head or my neck instead of my foot?

Thanks,
)vc

Right click on the acctachment and you'll see attach to and you'll get a list of all the attachment points, just chooses the one you want then adjust the attachment to fit right

When you don't specify a location for it, an attachment will just go wherever it was attached last. If it was never attached to anyone before, it defaults to the skull.