Edit Curve Profile
To edit a curve profile, check the box on the left of the button 
and click on this latter.
In the window "Curve Profile", you be able to change duration/lenght of the profile and define the curve profile by clicking on "Plus" button adds a midpoint or clicking on "Cross" button deletes the point.
When you have satisfied with your curve, click on "Save" and you need to save the element on the "Side View".
note
By default, each midpoint is placed equidistant from the two original points:
