Maybe I\'m wrong ... but as far as I know all Jitsi Meet element (home and room page) build using script that has been minified and also some of them connected to files insi
You might be able to use lib-jitsi-meet to create a custom layout as described in this dev community post.
https://community.jitsi.org/t/jitsi-dev-jitsi-meet-video-conferences-with-a-custom-gui