Click mouse button 2 on the symbolic window
on the map corresponding to the window you want to move.
Drag the window to the desired position.
Release the mouse button to drop the window in place.
NOTE:
If you move a symbolic window that you have nailed,
you will also move the viewfinder and, as a consequence,
the view area.
Nailed windows are effectively part of your viewfinder
until you unnail them.