Changing Per instance variables

After installing the game server. You can go to the folder location, Game Server Folder Root. Steam-Server-Manager\<ServerFolder>\Variables-<ServerFolder>.ps1 Right-click and edit with Notepad or your favorite editor, like Notepad++.

Example: Steam-Server-Manager\insserver\Variables-insserver.ps1
Steam-Server-Manager\<ServerFolder>\Variables-<ServerFolder>.ps1

Here you will see the variables used by SSM and the Launch Params. Edit Carefully. You can add commands to the launch params. Make sure anything that is added is inside the last quote. Example:

Before
# Server Launch Params
$global:launchParams = @("${executable} ${defaultmap}?Scenario=${scenario}?MaxPlayers=${maxplayers}?Lighting=${lighting} -Port=${port} -QueryPort=${queryport} -log")

After
# Server Launch Params
$global:launchParams = @("${executable} ${defaultmap}?Scenario=${scenario}?MaxPlayers=${maxplayers}?Lighting=${lighting} -Port=${port} -QueryPort=${queryport} -log -Mods ModDownloadTravelTo=TORO?Scenario=Scenario_TORO_Checkpoint_Security?Lighting=Night")

changing hostname from variables-*.ps1 will automatically change the server config during startup