1. Click on the Zoom percentage in the top-right corner of your screen. This will open the View Settings menu.
2. If there is no check next to the Layout Grids option, clicking on this will display them.
3. If there is a check already showing, clicking on the Layout Grids will hide them:
4. Or, you can use the Keyboard Shortcuts to toggle Layout Grids Off and On: MacOS: [Control] + [G] Windows: [Ctrl] + [Shift] + [4].
5. MacOS: [Control] + [G].
6. Windows: [Ctrl] + [Shift] + [4].