Normally the PARTdataManager Part selection is called via PARTsolutions menu of your CAD system e.g. with the context menu command Insert 3D or with 2D CAD systems with Insert 2D.

Detailed information on the CAD interfaces can be found under Chapter 2, Open PARTsolutions from CAD systems.

PARTsolutions menu exemplified with Inventor

Alternatively, call the PARTdataManager (PARTsolutions Parts Management) directly via Start menu.

Windows Start menu -> CADENAS directory