To enable Extend mode, press Windows + P to open up the “Project” menu. Select “Extend” by clicking or using the arrow keys and the Enter key. Note that if you plan to manage full-screen apps like games across multiple monitors, the game or app itself may have its own multi-display settings within the program.
Why can’t I drag a window to my second monitor?
Cause. This behavior can occur if the window you are trying to drag is maximized, or your monitors are not positioned correctly.
How do I move Windows between screens?
An alternative method of moving desktop applications using the keyboard, is to open the application system menu by pressing ALT + Space and then press m to select move. Then you can use the arrow keys to move the application window.