Windows 10 build 9926 start menu how to achieve resizable function?

Recently, Microsoft brought a new January technology preview version of Windows 10. In this version, the user sees a lot of new features and some adjustments made, one of which is the "Start" button change.

As exposed at the end of last year, this Microsoft brought the "start" function of the menu size adjustment under build 9926.

So how can we achieve this function? Here are the methods available to foreign developers:

Click the "Start” button, select “Run(Run)”
Enter regedit
Go to HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Explorer>Advance
Create a brand new DWORD (32-bit) value, name EnableXamlStartMenu
Restart Explorer

How does the build 9926 start menu show how to implement the resizable function? Do you understand it? hopefully this can provide beneficial help to everyone!