I am just trying to find a way to make my fencing posts to align with the top of my roof plane (image attached). 
  
I haven't created them individually I have created them using a "straight railing" wall and then converting the "Rail Style" to "No Rail". I've also tried changing the "Newel/Posts" section to "Post to Ceiling" although I need it to the roof. 
  
Sorry the software I am using is Chief Architect Premier X6 for Mac. 
  
Any help would be greatly appreciated!