Window reveal - Place window on specific place

[Zendrix]

Hi all! just starting to mess with Archicad.

My question is regarding placing a window:

I have a stone house which existing walls are 50cm and made of granite. I am trying to draw the existing situation, but having troubles placing the window on the narrower part of reveal. I messed around with settings, but cant seem to move the window to the right place. 

I managed to design the reveal correctly, but missing pushing the window to the outter end of it.

Please see attached images.

Thanks

Operating system used: Windows

[Lingwisyer]

Check your Reveal Type. There is a seperate one for your outcome.

Ling.

[Zendrix]

Hi Ling. Thank you for your answer.

I think you misunderstood because I didnt explain all the detais. On the right side of the 2nd picture is the exterior, not the interior. My reveal is correct, i just cant after that place the window on the position it is at the moment. Its a simple granite existing wall and the windows are located on the reveal and not behind the reveal.

Thanks,

Rui

[Lingwisyer]

If you need it the opposite way around, with the narrow section outside, you could use the last option?