Select the point in the center of the top edge
of the profile, as shown.

The profile location changes so that the top edge of the profile is
on the sketch segment. Because the sketch is on the bottom face of the
part, the top face of the new structural member is flush with the bottom
face of the part.

In the FeatureManager design tree, Structural
Member5 appears and the Cut list
is incremented.
Save the model.