ElytraRacing provide a documentation here: https://chooseit.gitbook.io/elytraracing/

/ermap (elytraracing.admin) : Allows you to configure and create (almost) your map without using its configuration file.

/erhost (elytraracing.host) : Allows you to host a game.

/er (no-permission player command) : Allows players to join and leave a game.

/ergames (elytraracing.admin) : Allows you to configure and create autogames server.

/erconfig (elytraracing.admin) : Allows you to configure holograms and items.​