Guide to run a headless server for brainlets.

Grab those files from this zip file: https://files.catbox.moe/lpzq0l.zip
StartServer.ps1 - Powershell script to start the server
serverparameters.json - Config file for scenario and config folder
Place them into your openrct2 folder.

Open serverparameters.json and edit the scenario, paste the full path of the save/scenario you want to load, also edit the server_data_folder to a new folder where you want the server to store the data, like saves and shit. It's a new user folder that will only be used by the server.

Example:
{
  "scenario": "D:\Games\OpenRCT2\Scenarios\FuckingImpossibleScenario.sv6",
  "server_data_folder": "D:\Games\OpenRCT2\Server Data"
}

After that, right click on StartServer.ps1, click on "Run with Powershell", a console screen will open.
A firewall prompt may also open, give it permissions to your network. Close the server, the server data folder will be created, open the config.ini in there.

Change the parameters you wish to change on this section:

[network]
player_name = "Host" <- This is the player name that the headless server will have
default_port = 11753 <- Server port
listen_address = "" <- Leave it empty
default_password = "" <- Pick a password
stay_connected = true <- Don't touch
advertise = false <- False to not be advertised on the master server
advertise_address = "" <- Ignore
maxplayers = 16
server_name = "/vr/ Server"
server_description = ""
server_greeting = ""
master_server_url = "" <- Ignore
provider_name = "" <- Ignore
provider_email = "" <- Ignore
provider_website = "" <- Ignore
known_keys_only = false <- Leave on false, unless you want to use whitelisting
log_chat = true
log_server_actions = true
pause_server_if_no_clients = false <- False if no one besides the headless server is connected
desync_debugging = false

Save the file, and run the server again ( right click at StartServer.ps1, Run with a powershell ), you'll get a console screen.
Open your OpenRCT2 and connect to your local server ( ip 127.0.0.1 should work )
Alt tab, change to the server console and type network.players[1].group = 0
Congratulations, your client is now admin. Now you can change permissions directly from the game.

This should be enough. I'm not covering port forwarding.
This could have been a .bat but i like powershell.