title: How to add File attachment in campaign Form in CRM 2011
body: <p>My CRM is configured in outlook  , and i need to add File attachment in campaign form , I tried Customize->Form... But i cant find File attachment in Field Explorer..</p>
  
  <p><img src="https://i.stack.imgur.com/kB0Ga.jpg" alt="enter image description here"></p>
  
  <p>So how to add this, as shown in image...</p>
  
  <p>thanks.</p>