Action flow - how to make angles in connectors lines

Hi there,
Does anyone know how to break a connector line in several parts? I mean, making angles instead of having only a straight line.
When we click in the little square at the middle of the line and we drag it, it looks like that will perform this, but after that the line returns to its original shape.
Thanks for your time and help.
You could add a Assign action with no assign in it (see attachement called NOP, No Operation).

But it would be easier if the Service Studio IDE simply remember the position of the line.

Kind regards,
Matthias Preuter
Now with a good picture