you can create "ONE WALL" with 2 different materials and thicknesses
and than draw on a banding (any profile you'd like - you design the profile
or use one of the stock profiles that come with softplan)
you can make the banding part of the wall but it would have to be a
fairly simple design if you make it part of the wall.
if you draw the banding on after you draw in the column,
the skies the limit on the profile of the banding (curves, straight lines, etc)
note: you can also create a round column with same wall and a banding wrapping around
the round column.
showing with banding on right 2 columns and a cap that's part of the wall on the left 2 columns (walls)
with "beams" you can put a profile at the ends (one end or both ends) you create custom profile bm ends.
softplan also comes with a couple of stock profile ends.
you can also "CURVE" (vertical) the beam and give the curve a height. you can put beam ends on the curved beams.
the wood you see at top of column is done with a "solid / cube" offset as needed.
you can make the column/wall as simple or as decorative / detailed as you want.
since your new, you wouldn't have v2016 by any chance.