Just like Start menu FROM Previous versions of Windows, Start Screen-ul Display tile sites For about all installed applications in the system. Also, whenever a The new application is installed (modern or desktop), a tile for this is fixed (pinned) in Start Screen.
If you would prefer that Modern applications that you install from Windows Store not to place tiles in the start screen, in Windows 8.1 You can prevent this with the help of Local Group Policy Editor.
How do we prevent modern applications installed in Windows Store to create tiles in Windows 8.1 Start Screen?
- open Run (Windows + R) if you taste GPEDIT.MSC, then give Enter

- Navigati Catre Computer Configuration > Administrative Templates > Start Menu and Taskbar
- In the right panel, give double-click on the entrance Pin Apps to Start when installed

- Then, in the set of settings, select Enabled And give Apply and OK

This setting will allow fixing tiles in Start Screen only for applications that have Appids included in the approved list:
This policy setting allows pinning apps to Start by default, when they are included by AppID on the list.
Restore the system for the changes made to have an effect. After restart you will notice that Tile for new Windows Store installed applications they will no longer be displayed at the start of Screen.
STEALTH SETTINGS – How to prevent modern apps from pinning their tiles in Start Screen when installed
 
			