Since I'm not at a Softplan computer at the moment, I'm ad-libbing, and this is probably oversimplified, but if you need to draw profiles, what you see is pretty much what you get ...
So if you want a typical Dutchlap siding, you can draw exactly what you want from a simple shape like this ...
to actually measuring a piece of siding and duplicating it exactly.
Again a steel profile can be a simple shape ...
or exact measurements.
I haven't looked seriously at 2020,but from what I understand, its exactly what you would expect ... you draw a 10" x 1" (9¼" x ¾") rectangle, and then a 2" x 1" (1½" x ¾") rectangle next to it touching at the top ... Like this (exactly what you would see a board and a batten).
And save it under PROFILES > SIDING. Then under your wall definition, you choose that profile, and check the VERTICAL box.
For a good example of the use of profiles, have a look at this pole barn thread, and the way pole barn girts are constructed. Especially Derrik Bauer's post (post #3).