From Site Explorer:
  1. Navigate to Site Explorer>Parts
  2. Click the search tab
  3. Search for the part in question
  4. When it's found, click the pencil icon to edit it
From an existing page:
  1. While logged into NetCommunity, navigate to the page which has the part you want to edit
  2. Click Edit this page in the upper left corner
  3. Click the gear icon for the part you want to edit
  4. Click Edit from the dropdown