The WIN10 Creators Update is currently in beta testing for release later in 2017.  Below is further documentation of a new feature that will likely appear in next WIN10 version release.

https://mspoweruser.com/windows-10-creators-update-will-introduce-app-folders-for-the-start-menu-on-pcs/

Microsoft is set to release the Windows 10 Creators Update in early 2017. The company has already introduced a handful of new features coming with the Creators Update to users in the Windows Insider program. The software giant is also expected to release a set of other features in early 2017 ahead of the official public release.

Now, there is a new feature coming with the Creators Update which Microsoft is yet to officially announce — and that is app folders on the Start Menu. If you happen to own a Windows 10 Mobile device, you are probably familiar with this feature — it essentially allows you to make a folder of tiles on the Start Menu. If an app has a live tile, the tile will still function in the folder which is very neat. And just like all of the other tiles on the Start Menu, you can resize the app folders too.