your tree seems to show exactly what I wanted to do.
(freecad can have a hundred different ways to get somewhere.)
I just can not tell how you got there.
I can not tell what workbench you are using,
and I do not see yellow and blue stair step icons.
I really believe this should be easy,
but the interface keeps losing me.
there is no intuitive structure to the menu.
the interface needs to be designed so it is understandable,
not only the the professional designer and draftsman,
but to someone who knows what he wants.