How to add a Workshop map ?

[Charles]

List the workshop file IDs [4190, 8265], (for example) and add them to the WorkshopDownloadConfig.json file available in the configuration tab on your panel.

{
  "File_IDs": [
    2256867322
  ],
  "Query_Cache_Max_Age_Seconds": 600,
  "Max_Query_Retries": 2,
  "Use_Cached_Downloads": true,
  "Should_Monitor_Updates": true,
  "Shutdown_Update_Detected_Timer": 600,
  "Shutdown_Update_Detected_Message": "Workshop file update detected, shutdown in: {0}",
  "Shutdown_Kick_Message": "Shutdown for Workshop file update."
}

Restart the server and you're done.

The mods will automatically be installed in the /Servers/VeryGames/Workshop/Steam/content/304930 folder

The maps will be available in the map selector in the configuration tab on your panel.