Also compare Section 7.9.3.2.1, “Connection points for assembly construction ”.
In order for single parts to be able to be connected by a Set of rules in the Configurator, at first Connection points have to be created in the PARTdesigner.
For this, via Start -> Programs -> CADENAS -> eCATALOGsolutions, call PARTproject.
Select the desired 3db file and click on Edit.
-> The file is opened in PARTdesigner.