If you want to host your own server with sectorized download the SectorizedPlugin.jar file, put it in the mods folder of your server. Relative to the plugin location create a folder named config and put the three config files (config.json, dbUrl.json and discordConfig.json) inside.
Your final structure should look like this:
mods/
├─ config/
│ ├─ config.json
│ ├─ dbUrl.json
│ ├─ discordConfig.json
├─ Sectorized.jar
By default, the database and discord features are disabled and the configuration for these features is empty, to enable them you need to configure them and change the corresponding fields in config.json to true
When correctly configured you should be able to run a sectorized gamemode by running the sectorized command in your server console