You are reading the documentation for an older Pickit release. Documentation for the latest release (2.4) can be found here.
Pickit Teach is a detection engine that works in 2 steps. First you show an object to the camera and Pickit remembers the shape. Next Pickit will look for similar shaped objects in a new scene. In the image below, first a single bottle was shown to the Pickit system, next similar shaped bottles are found in the bin.