Ami

I'm making a ruinous building and I'm stuck on how to reshape the wall. I've tried reshaping the wall but it didn't seem to work out. I then tried to make a 3d shape, then create a wall recess but the sides of the wall still remain. I have now made a 3d shape of the wall but don't know how to make it apart of the wall . So how do I attach the 3d object to the wall or is their a better alternative method.

I'm making a ruinous building and I'm stuck on how to reshape the wall so it creates defected wall. I've tried reshaping the wall but it didn't seem to work out. I then tried to make a 3d shape then create a wall recess but the sides of the wall still remains. I have now made a 3d shape of the wall but don't know how to make it apart of the wall or a wall.

Hi, I am having trouble figuring out how to import a 3d model of a building from Vectorworks on a separate Vectorworks document without the model appearing disfigured or have missing objects? Also how do I bring it to ground level on a site model?