Display Fusion on trial mode. I have two monitors with the second monitor extending the primary desktop. So, I can move my cursor or a window from the primary to the secondary. What I want to do is to stop the movement from the primary to the secondary; i.e. so that the cursor or window will stop at the primary screen border. I'd rather have to manually switch to the second monitor by a hot-key (or other affirmative action).

How do I do this?

Thanks.