If the logo is a single color, use its shape to create a fill in the complex profile dialog, then make a very short complex profile wall with it stuck to a backing wall.
If the logo is a multi-colored image, use Archicad's "Picture" object to place it on the wall. You will learn Alpha channel masking to turn the irregular edges invisible while on the rectangular picture object surface. To do this step requires a photo editor.
Dwight Atkinson
