This article will review some of the steps that can be taken to change your VEIN server settings.
In-game
Step 1: Add yourself as an admin
Step 2: Log in to your VEIN server
Step 3: Once in-game, click on the backslash key (\) to open the in-game admin menu.
Step 4: Click on the Config section of the in-game admin menu.
Once a change has been made, it will automatically write the settings to the Engine.ini file on your server.
Game Panel
Step 1: Log in to your game control panel
Step 2: Click on Configuration Files.
Step 3: Open the Engine.ini file by clicking Text Editor to the right of the file.
Step 4: Find/add the line that has [ConsoleVariables].
Step 5: Add the wanted options.
Step 6: Click "Save and Exit".
Additional settings can be found on the official VEIN server setup guide here or by using the in-game console command PrintAllVeinSettings