How to set up the win10 system taskbar automatically merge icon

Many users, especially those who have just come from the XP era, are accustomed to the rectangular taskbar program tag. Only when the taskbar is full, I want to merge the program icons, but Win10 is the default merge program icon. So how to set up to automatically merge the program icon when the Win10 taskbar is full?
Operation method
1. Right-click on the taskbar and select Properties.
2. In the taskbar button, select Merge when the taskbar is full.
3. OK, complete.
If you want the taskbar to never merge program icons, you can read the "How Win10 does not merge the icons of the same program on the taskbar" tutorial.