Can you add or delete pages in InCopy?

Working with InCopy CS4 on Apple.

Let's say I got an Indesign document with 4 pages. My author can edit the document via InCopy. Now he needs 2 more pages because his text gets longer. Is there any way he can add the necessary pages in this document by himself in InCopy or let InCopy automatically add as many pages as necessary (like Word would)? Or does he have to ask me to add the pages in Indesign?

And vice versa: Can the author in any way delete unnecessary pages?

Thanks