When you place doors in a wall, you can use the Offset Insertion Mode to…
podcast 176 – Placing Doors and Windows Accurately
Some users do not know how to place doors and windows accurately, so they place the door then move it to the correct location. This is the slow way to work. If you knew the fast way to do it, you would be more accurate, you would speed up your work and you would find Vectorworks easier to use.