As a UI/UX designer, I don’t quite understand why communities are so obsessed with shoutboxes. It reduces engagement with posts and discussions, making it harder to find valuable content that users might share in shoutboxes. Additionally, it doesn't effect to SEO, and while it might help lower bounce rates, that’s about all it did. Perhaps I’m missing something, but to me, they feel completely unnecessary.
You can place anywhere If developer make it compatible with forum widgets extension.