There are several ways of visualizing an object in a window (after object loading) :
Drag and drop the object on a window icon of the left menu bar (it will open a new window containing this object).
Drag and drop the object on an already opened window.
Drag and drop the object on an opened window icon in the right panel.
Select the object and a window and click on add button in the left menu bar.
Select the object and a window and click on Objects => Add objects in windows menu.
Likewise, there are several ways to remove an object from a window :
Select the object and the window and click on Remove button in the left menu bar.
Select the object and the window and click on Objects => Remove objects from windowsmenu.
It is also possible to copy all objects from a window to another window : drag and drop the source window on the destination window. This will open all visible objects of the source window in the destination window.