Server - pantherman594/BungeeEssentials GitHub Wiki
Command
The server module isn't registered as a command, but instead listens for when a player runs the /server command without any arguments. It cancels that event and instead makes the player run /glist to show a list of the servers. If there are arguments, this module does nothing, so that it doesn't hinder switching servers.
Configuration
When you first install BungeeEssentials the command will be enabled, though if you wish you can disable it by removing server from the enable section of the config file.