Facebook, allow the application to manage only one page

I have the following problem:

I have the number of facebook pages for different sites (some of mine, sime belongs to clients, but I manage them)

Now, both my own websites and client sites should use applications that will manage relevant pages.

The only scope of the application that I see is manage_pages, but when I give it the application, access to all pages.

How can I provide access to applications on only one page, so it will not be able to add / remove messages from other pages?

thank