Third update in version 1.4 Demo version (free) when the plugin is loaded by the server it happens that it does not load the entire plugin. If you have something like that, you need to download the version assigned to your server (make sure you have spigot)
(If you have a server on versions 1.8-1.18.2 it is better to download 1.4)
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/check - main command having <arguments>
The importance of arguments:
/check add [IdName] [Name] - the command called with the add argument creates a checker /check delete [IdName] - the command called with the delete argument removes the checker /check list - the command called with the list argument shows the created checkers /check player [player_name] - the command called with the argument [player_name] teleports the person who called the command and the player selected in the command ([player_name]) to a free checker.