The first way, is with the mouse, by grabbing the title bar of any application window and moving it to the extreme left or right side of that monitor. That window should snap into using the left or right half of the screen (depending on where you drag it). You will then be presented with a list of other app windows that can be snapped into the half of the screen.
The second method is to use the Windows Shortcut keys:
- WinKey + Up Arrow: Snaps the current application into the maximize position.
- WinKey + Down Arrow: Snaps the current application into the minimize position.
- WinKey + Left Arrow: Snaps the current application to the left half of the monitor.
- WinKey + Right Arrow: Snaps the current application to the right half of the monitor.