If you just have a single monitor, you can also use the Snap feature to quickly place multiple Windows applications side by side. (howtogeek.com)
The downside here is that you can't run macOS applications and Windows applications side - by - side at the same time. (howtogeek.com)
The Windows 8 and RT experience offers some unique advantages, such as the ability to use full Microsoft office and the ability to use multiple applications side - by - side. (howtogeek.com)