Open the app or window you want to snap.
Drag the window to the left or right edge of the screen until you see the snap outline.
Release the mouse to snap the window.
Select the other app from the snap layout picker to fill the remaining side.
To use keyboard shortcuts, press Windows + Left Arrow to snap left or Windows + Right Arrow to snap right.
Press Windows + Up Arrow to maximize within a snapped half, or Windows + Down Arrow to restore.
To snap to a quadrant, press Windows + Left/Right Arrow, then press Windows + Up/Down Arrow.
To use Snap Assist, after snapping the first window, choose the suggested window from the panel that appears.