[jcagalawan]

Is there a setup that lets multiple people edit at the same time?

[nullc]

Yes. It's not the sort of thing you'd use with untrusted parties over the internet since it requires access to the remote x-server, but it totally works for collaborative editing (esp with people sitting in the same room):

https://www.gnu.org/software/emacs/manual/html_node/emacs/Mu...