The 'Quick-Return-2' motion-law is Not available in the Motion-Law Selector.
The 'Quick-Return-2' motion-law is a Rise & Return motion-law that is continuous in Velocity, Acceleration and Jerk.
Construct the 'Quick-Return 2' motion with two Flexible Polynomial Segments.
The first segment is the 'Rise', and the second the 'Return'. Each segment is a 'mirror' of each other.
Usually, the segments have an equal duration, but this is not necessary.
Continuity at the Mid-Point Blend-Point
The Position is maximum [P=1], and the Velocity is zero at the mid-point.
The Rise segment [below, in Blue] ends with a finite, negative acceleration.
The Return segment [below, in Red] starts with the same finite, negative acceleration.
There is acceleration continuity when the two segments follow each-other.
The Jerk is continuous and zero at the mid-point.
The Jerk is also zero at its start an end.
The position graph makes a quick-return at the mid-point because there is a large negative, but continuous, acceleration at the mid-point.
* An acceleration discontinuity would give a very poor dynamic response if applied to any mechanical system.