title: Adding a Tab to the Outlook 2010 Ribbon?
body: <p>I'm trying to create an Outlook 2010 addin that adds a new tab to the ribbon. I found out how I can add my groups to an <em>existing</em> tab by setting the OfficeId to "TabMail" or something built-in, but I don't want to modify existing tabs.</p>
  
  <p>I've now set the OfficeId that something of my own ("TabMyAddin"), but it doesn't show up in Outlook. I wonder if I need to somehow tell Outlook to add it and show it, or how I would proceed?</p>
  
  <p>The RibbonType was changed to Microsoft.Outlook.Explorer if that matters.</p>