Using Assembly Tools

  Manage Products in an Assembly:  Select Tools > Product Management...,modify the part number in the New part number field and replace the associated representation in the New representation field. 
  Publish Elements: Select Tools > Publication...,select the element to be published then rename this element.
  Use a Part Contained in a Parametric Standard Part Catalog: Open the catalog of your choice, navigate through the catalog, select the desired part, use the Copy then Paste commands.