DragControls - Enable/disable dragging for individual objects

I’ve added DragControls to a scene.

var dragControls = new DragControls(draggroup.children, camera, renderer.domElement);
dragControls.addEventListener('dragstart', function(event) {
  dragindex = Array.from(draggroup.children).indexOf(event.object);

All children of draggroup are actve. I want to deactivate first children from dragging,without remove it from draggroup, but how?

Sorry, this one was overlooked.

That is not possible with your current setup. I suggest you manage all draggable objects in a separate array like demonstrate by the official example. In this way, they can be all part of a single group object but still added/removed individually to/from the controls.