Verizon Note 2 Multi-Window

I have my Note 2 and love it, so far. Does anyone know of a way to add apps to the multi-window? Or does it ONLY support the apps in the sidebar? If it only supports the listed sidebar apps for now, it may get returned. I want full multi-window access to some of the apps (Chrome, Gmail, etc.) that I have seen in videos before.

Thanks!