[Ollie Farrant]

Hi Sian

To achieve the recess when adding a Velux, please set the wall depth to 300 and then when adding the Velux window while in elevation view, please drag and drop the Velux window into the wall first (so it picks up the depth first), then drag and move it into position on the sloped ceiling.

If you require further assistance please let me know.

 

Thanks
Ollie