Netcommunity does not allow for direct access and editing of the header file.  Clients will need to do the following for any content that needs to be added to the <head> section.
  1. Create an unformatted text part
  2. Put the content into the part
  3. Mark the "advanced options" checkbox
  4. Set the dropdown to <head> instead of <body>
  5. Put the part on the page if needed on pages, or the template level if needed on the site as a whole