Enter Split View Hover your pointer over the full-screen button in the upper-left corner of a window . Or click and hold the button. Choose ”Tile Window to Left of Screen” or ”Tile Window to Right of Screen” from the menu. ... Then click a window on the other side of the screen to begin using both windows side by side. Hover your pointer over the full-screen button in the upper-left corner of a window . Or click and hold the button. Choose ”Tile Window to Left of Screen” or ”Tile Window to Right of Screen” from the menu. ... Then click a window on the other side of the screen to begin using both windows side by side.