Hi Michael,
Thank you very much for your energy and commitment in dealing with my constructive problems.
More details:
I would like to achieve the following. At the point where the two green profiles are, the sweeps should change or meet, specifically from horizontal to vertical.

This means that the profiles arriving from both sides rotate along their splines. This rotation should begin at the “bend point” when they come from the side with the narrow radius, for example. That is why I would like to place the profiles there.
Is that reasonably understandable?

Mala

P.S.:
I tried to recreate it for illustrative purposes.
What irritates me a little, beyond the actual problem of profile placement at the bending points, is that these sweeps don't work...hmmm....