*Use /<server> instead of /server <server>.
*Connect securely.
*Countdown to connect.
*Check the server version (ViaVersion required).
*Confirmation menu.
/<server> - To connect to a server.
server.<server name> - To connect to a server.
server.* - for all server permissions.
Copy the JAR file in the directory of plugins
Restart the server to install.
(Optional) Install the SuperLobbyDeluxe plugin To customize and add amazing features to your lobby.