This window displays all part revisions used in the selected project. Documents and/or document requirements that are common for all items of a revision should be connected to the project part definition. You can connect documents and document requirements to a part definition by using the Attachments on task pane.
Documents and/or document requirement that are specific for a certain 
project item should be
placed on that item  by using the Attachment pane in the 
Project Product/Items
tab. 
    
You can
  transfer a list of project items to 
Project
  Item Navigator window by selecting the menu option Project Item 
Navigator. 
Also, if you are in the 
Project Part Definitions window, 
you can select the menu option Project Product to transfer project 
item(s) in the 
Project Product window.
Create
  And Maintain Project Product Structure
  Approve
  Project Product Structure
Monitor
      Project Part Definition
Replace
      Project Item Revisions
Add to
      Project Quotation List
Update
      Project Material Cost From PQL
Approve Part
      Definition
Connect Document to Part Definition