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You can navigate to a contributor's page in multiple ways. The most direct method is by selecting the Contributors item in the Catalog menu. Use the form at the top of the Contributors list page to search for the contributor in question.
Another way to navigate to a contributor's page is by clicking the contributors name in the Participants section of Edit Product page.
Regardless of the method used to find the contributor, the Edit Contributor page allows full control of the contributor's information.