I have found in the new features that it's possible to select the monitor for rendering in full-screen (A7 Professional).
But I thought that it may be also possible to render over the whole desktop-area, means that the engine will render over both screens. An other possibility would be to start 2 GameStudio instances and render some other events on the second screen. Is that possible or is such a feature planned in near future?
I have seen that various game-engines already can render on more than one screen.
This depends only on the video card. Some cards support rendering over both screens, others don't. Just try it. If it works with any other engine, it will also work with Gamestudio.
Alternatively, just start 2 engine instances and render to different screens.