Elevation Cross Section - switch basement off?

[Sydney23]

Ok, having now read the manual (!), can see that the cross section/elevation camera has to be dragged more than a snap distance but not so far as to cross a 3D object (eg wall), then it allows me to send to Layout as more than just an image, i.e. something I can set scale for.

Except...

...when I view it as a Technical Illustration (what I want), then of course I can't set the scale when I send it to Layout, oh no, that would be far too easy.

Help!!