From an Integrated Library - the source libraries are extracted, the change made and then the integrated library package compiled to generate the revised integrated library.The nature of this source depends on how the component was placed: The logical place to make a change is at the source. Applying Changes from the PCB Library Editor.Applying Changes from the Schematic Library Editor.Updating Directly from a Source Library Document.Controlling the Update by Component Instance.Updating Schematic Components from Libraries.