You can use Horizon Client group policies to hide some items in certain menus in the Horizon Client user interface.
For general information about using the Horizon Client group policies, see Using Group Policy Settings to Configure Horizon Client.
For detailed information about using the group policies that control the Horizon Client menus, see the descriptions of the Hide items in application context menu, Hide items in desktop context menu, Hide items in desktop toolbar, Hide items in system tray menu, and Hide items in the client toolbar menu group policy settings in General Settings for Client GPOs.