Window with custom opening

[nasnie]

Hi! I'm new to Archicad, so please have patience. I'm trying to model a historical building, where a window opening is not regular (floorplan in attachment). How can I create something like this?
I tried using Morph tool for the opening itself, but- as the wall becomes a Morph object- I was unable to place a ready-made window.

Thanks

 

[Botonis]

Check the reveal settings of the window.

You do not have to change the walls to morph.

Check the help files of Archicad for more details.It will be easy and more interesting!!!

Greetings!