@stef.salmon
I know you probably don't need this but it don't hurt to much to take a look at:
https://www.sweethome3d.com/blog/how-to-design-wall-recesses
https://www.sweethome3d.com/support/forum/viewthread_thread,7813
https://www.sweethome3d.com/support/forum/viewthread_thread,8833

@Keet
Probably, but I'm a decade over Unix epoch. [:((]