How to not hide all slide-ins?

If I have two different slide ins, with different content; One (#1) showing on all pages, and the other (#2) overriding the first one on a specific page. If a visitor closes a #1 slide in, I don't want it to appear again anywhere, but if the visitor visits the page with the overriding #2 slide, I want it to display there. How do I do that?