Load level or map from external file by using Command-Line

Hi …
The problem is simple:
We need to run command line something like “MyGame.exe Level05” which:

  • “MyGame.exe” is an unreal game which is already made and installed on local machine.
  • “Level05” is a simple level (may have some assets there and lightings and materials)

Assume you have a game/app installed on you machine made by Unreal Engine, now you need to send it a new map or level via command line. So basically the game is already made but the levels are coming from clients after game is installed.

Is there any special field in editor which I need to check for make the game? How about the map? Do I need to follow some sort of rules to make maps ready for inserting in game?

Thanks