How does ist work?
It creates a Void-World, where nothing is in it, If a Player does Join, it does check if the Server has reached the maximum of Players. If a player leaves the Server, one of the Queue does Join

Permissions?
xqueue.instant - A player that has that Permission, can always Join, even if the Server is full.

How to setup?
Drag the Plugin in to your Plugins-Folder on your Spigot/Paper Server.
Let the Plugin create the World "queueworld". In the config you can set many different messages (more will be add soon). Reload the Server to change the changes in the config.

Config?
server-full: The Message when the Server is full.
instant-queue-join-message: The join-message if a player has "xqueue.instant".
connecting-join-message: The Message if someone joins the Main-World.
max-players-on-main: The Maximal Player in the Main-World
tablist-header: The Header from the Tablist.
tablist-footer: The Footer from the Tablist.

Contact:
Ye doy#0389 in Discord.