A: When you have located the surfaces of the object you want to copy in the OdeonEditor, you copy these surfaces together with all the points to a new editor. Save and load the new room in Odeon. Now to get rid of all the extra points it might be necessary to export the model to DXF and then import it to Odeon Again. This is possible from the file menu.
When this is done you should use the MTranslate function to insert the object back into the room. And use the NumbOffset function to make sure the new copied objects do not interfere with the existing point and surface numbers.