The first link is for door size 48x66
The second link is for door size 48x48 (this will work for door size 48x96 if your walls are three tiles high)
Here is a screen shot of how it looks when you set up your door way. You will want to put a ceiling tile over the open space for your door.
Also, regions should be set to both allow passage through the ceiling tile right above the door way, and restrict passage on the rest of the tiles.
Once you have this set up, place the Doodads in game, make sure they are layer 6 or above. Some need a tiny bit of tweaking, just reduce or increase the X scale a little to blend them perfectly.
After use, I found it works better if you place an allow region directly above the door (shown in screen shot below) Also, here is how to write the door event. The second tab is exactly the same EXCEPT you are turing off self switch A, instead of turning it on.
Here is the link to the files in dropbox. I hope they prove useful to some! :D
For use with 48X66 Door
https://www.dropbox.com/sh/jrvyuwzygfbm3zt/AACLKrAb1r796E6EUr2tqK9Va?dl=0
For use with 48X48 Door (this will work for door size 48x96 if your walls are three tiles high)
https://www.dropbox.com/sh/e4432x1v8jv2ihf/AADoCFl2-OHWvD1xXtwwlEMQa?dl=0