un-named-user If you mean what @ONI said, you don't "turn on" or "turn off" the standalone version of the game. "Standalone" means that Cosmoteer is installed as a normal application instead of being installed through steam as a demo. There's no mechanical difference between the standalone and steam versions if that's what you're thinking, they're just different ways you can install the exact same game. If you want to switch to using the steam version, go to Cosmoteer's steam page and click the "Download Demo" on the right side of the screen.
If you mean literally anything else, you'll need to elaborate, we don't understand what you're asking.