In 2014 the Bill of Material Command was moved to the Manage Tab. This command is used too heavily to be moved to a non primary Ribbon Tab. Now if you added the ability to start the command from the RMB when no components are active I would have accepted that, but its not there either. Now a user has to add it to their QAT or Customize the Marking Menu to get this very commonly used tool back. This was a regression in 2014 for usability.