Use this procedure to change the location or the position of a curtain wall unit with grips.
Viewing Curtain Wall Unit Start, End, Location, and Reverse Direction Grips
In Model view, the Location grip has three possible edit modes: Edit Along XY Plane, Edit Along YZ Plane, and Edit Along ZX Plane. Press Ctrl to cycle between modes until you are in the desired mode. The default edit mode is along the XY plane. In Plan view, the Location grip is restricted to movement in one plane.
If you want to enter a specific value for the second direction in any edit mode (for example, in the Y direction when editing along the XY plane), press Tab to cycle to the second direction.
You can also lock the movement of the curtain wall unit along a specific direction. If you enter a value for either of the dimension directions in the current edit mode and then press Tab, the movement of the curtain wall unit is constrained to the second dimension direction. When editing along the XY plane, for example, you can enter a value for X dimension, and then press Tab. The X dimension is locked at that value, and movement of the curtain wall unit is constrained to the Y dimension direction.