You can do it yourself using this formula:
x = centerX + cos(angle) * distance, y = centerY + sin(angle) * distance
CenterX, CenterY is the position you want to pin to, image points work well for this.
angle is the angle between the two objects, the system expression angle(x1,y1,x2,y2) works well for this.
And distance is the offset distance you want it from thos x, y positions, you can get the initial amount using the system expression distance(x1,y1,x2,y2).