In STK, you can show/hide objects in the scenario by selecting/clearing the Show check box in the Object Browser or from the object Properties Browser under the Graphics Properties options.

Changing an STK object’s visibility this way will affect all display windows. In other words, every single 2D and 3D Graphics window will either display the object or not. Through the User Interface, it is not possible to display the object in one window while hiding the object in other windows.
However, hiding in one window and displaying in another is possible using the “WindowState” Connect command. Additional connect commands introduced in STK 10 were designed to control the display of an object on both the 2D Map (Graphics) and the 3D Globe (VO). Below are samples of the WindowState command that assume you have two 3D Globe windows and two 2D Map windows.
To turn off Facility1 and Facility2 in all 2D windows:Graphics */Facility/Facility1 WindowState Show Off WindowId All
Graphics */Facility/Facility2 WindowState Show Off WindowId All
To turn on Facility1 in 2D Window 1 only:Graphics */Facility/Facility1 WindowState Show On WindowId 1
To turn on Facility2 in 2D Window 2 only:Graphics */Facility/Facility2 WindowState Show On WindowId 2
To turn off Facility1 and Facility2 in all 3D Windows:VO */Facility/Facility1 WindowState Show Off WindowId All
VO */Facility/Facility2 WindowState Show Off WindowId All
To turn on Facility1 in 3D Window 2 only:VO */Facility/Facility1 WindowState Show On WindowId 2
To turn on Facility2 in 3D Window 1 only:VO */Facility/Facility2 WindowState Show On WindowId 1
To see all the options for the WindowState Connect command, please check out the STK Help pages for
Graphics WindowState (2D) and
VO WindowState (3D).