Hoping this isn't a dumb question, but I'm very new at this, and talked into starting an instance on the fediverse with very little experience. We'd like to add a Matrix chat server to our instance, and I'm wondering how we'd go about doing that. Is is a matter of installing a plug-in with the Matrix program? Or is it a stand-alone service that we'd simply create a widget /link for on the site? Thank you so much for any help you can provide.