Vectors Position

Hi all,

I have a curve divided into a number of points and I want the points to move in the Y direction and in a concentric manner. So I want the vectors perpendicular at the point to face Y direction and then half of them to face +ve Z direction and half to face -ve Z direction to get the concentric effect.

I hope I could clarify my doubt clearly. The arrows in the red show what the location of the vector should be.

Kind Regards,
Kedar (18.1 KB)