title: Outlook 2010 AddIn in the TabAppointment Tab
body: <p>I tried to add my Outlook 2010 Add-In to the TabAppointment Tab. It perfectly works when I add it to the TabCalendar, but if you click on a appointment in the calendar another tab will be shown and this tab I guess is the TabAppointment. And of course my Add-In should be there. The user should not have to change the tab first to use it. </p>
  
  <p><img src="https://i.stack.imgur.com/wJEf1.png" alt="enter image description here">
  <em>The list of OfficeId for the controls/tabs. <a href="http://www.microsoft.com/download/en/details.aspx?displaylang=en&amp;id=6627" rel="noreferrer">List can be downloaded here</a>.</em></p>
  
  <p><img src="https://i.stack.imgur.com/AfhG1.png" alt="enter image description here">
  <em>The tab the Add-In finally should be placed</em></p>
  
  <p>My Add-In should be visible every time a calendar item is selected. So as I wrote, the TabCalendar work, but then it's placed in the Start Tab.</p>
  
  <p>Anyone an idea why my button group is not visible there when I choose TabAppointment? Is it the wrong tab? Or is it just not possible to add Add-Ins at this place?</p>