title: How to disable dis-select button on specific item (ng select multiple)
body: <p>I have been using, this <a href="https://ng-select.github.io/ng-select#/multiselect" rel="nofollow noreferrer">https://ng-select.github.io/ng-select#/multiselect</a>, what i want is, i want to disable the dis select features to the selected item.</p>
  
  <p><a href="https://i.stack.imgur.com/NXtBA.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NXtBA.png" alt="enter image description here"></a></p>