title: Can I add UI Elements in Settings Flyout
body: <p>In my metro app, I can attach some settings tab like the following image.</p>
  
  <p><img src="https://i.stack.imgur.com/EUL7g.png" alt="Settings with custom tab add"></p>
  
  <p>But I don't know how can I add an UI Element like on-off button in this screen(I want it directly in the settings screen, not inside any customised tab).</p>
  
  <p>How can I achieve that?</p>