When a blend point’s lone attachment is to a curve, the Continuity type is always G0. This arrangement occurs when a blend curve is attached to an endpoint of a curve, or to an inner part of a curve.
+ 
(Windows) or 
+ 
(Mac)) when attaching a
blend point to a curve.
To align a blend curve to a curve, begin by selecting the blend point(s). As detailed in the image below, to change the Continuity setting, use the expanded tool set found in the blend curve toolbox.
By choosing the BlendCrv Tools > Constraint Continuity 
> Blend Constraint
G2 icon, the blend curve aligns to the curve.
