User-defined start screen is prohibited. Win8/W8.1 system operation method

After the user has already customized the start screen in Win8/8.1 system, how can I prohibit other users from customizing the start screen? Please see the following operation:
First open the group policy, find the path by system:
Win8 system:
user configuration & mdash; & mdash; management template & mdash; & mdash; & ldquo; start & rdquo; menu and taskbar & mdash; & mdash; delete & ldquo; start & rdquo; Drag and drop and context menus on the menu.


Win8.1 system:
user configuration & mdash; & mdash; management templates & mdash; & mdash; & ldquo; start & rdquo; menu and Taskbar & mdash; & mdash; prohibition of the current user to customize the start screen < Br>Remarks: Since the Win8.1 system may not be finished, the item may be displayed in English, that is, Prevent users from customizing their Start Screen.