I set our juniormost sysadmin to install Zulip. He took a couple of days to read through the docs, then did it in an afternoon. Adding custom keywords -- Zulip

I set our juniormost sysadmin to install Zulip. He took a couple of days to read through the docs, then did it in an afternoon. Adding custom keywords -- Zulip calls them linkifiers -- took a fair amount of time, but we have about 25 of them and few of them resembled each other much. Since install day, it really hasn't required much maintenance.