title: Grant someone access to only one of the instances on Google compute engine
body: <p>I have a project on Google Cloud where in I have a few vm instances created.</p>
  
  <p>I need to give someone access to only one of the instances</p>
  
  <p>For now I have given them access to all the instances by adding them through IAM as</p>
  
  <ol>
  <li>Compute Engine Instance Admin</li>
  <li>Adding her as a default compute engine service account actor </li>
  </ol>
  
  <p>But how do I change this to give them access to only one of the instances please ?</p>
  
  <p>Thanks</p>