GGU-UNDERPIN: "Displacement boundary conditions" menu item
You can introduce additional displacement boundary conditions anywhere along the wall.

In the example above a "Rotation phi" of the wall of 0.0 has been entered 2.0 m below the top of the wall. The "Displ. wx" and "Displ. wy" switches stand for the horizontal and vertical displacements; the direction is defined by means of the sign.