Host the mp mission described by config class. Should be called as reaction to some UI action in some dialog.
For example you can start a MP scenario from a button. It creates a host and takes you to the lobby with the scenario loaded.
You need to provide the display which is active when the hostMission command is called.
The operand types are:
hostMission [configFile/"CfgMissions"/"MPMissions"/_scenarioClassName, _currentlyActiveDisplay];