How to add Item to Element Template

MicroStation Update 11

I have created some Items in an Items dgnlib which makes them visible and usable by everyone, but how can I attach an Item to an element template so that the Item is attached to every element drawn using that element template.

When in the Element Template dgnlib I right mouse to add the Item, there is no Items to select from. I can see the Items in the Item Types dialog but nothing in the dropdown Add list.

What have I done wrong?

I have found that if the Items are stored in the element template dgnlib you can add them, is this where they should be located?

Regards,

John.