what is the systems tab and the windows key
The Windows key, for Windows Vista (center), the circle around the logo appeared with Windows Vista and 7. The Windows logo key (also known as Windows key, start key, logo key, flag key, super key, command key, flag or home) is a keyboard key which was originally introduced on the Microsoft Natural keyboard in 1994. This key became a standard key on PC keyboards.
Properties - Security Tab. Use this tab to set the default Configuration Manager 2007 class and instance security rights on this object. To see and configure this tab, you must have Administrator permission on this node, or on at least one object within this node. The following columns are displayed in the Class security rights section: Name: Displays the Windows User account or group name for which the security right applies.