If you plan to create a CloneBone actor, please follow the steps below:
Apply a CloneBone actor from the Content Manager.
Prepare desired prop for one bone node.
Right click on the selected prop and select Attach, then click on the target bone node.
Make sure you the prop is selected and go to Accessories/Modify/Attach section. Check Move, Rotate and Scale boxes. (This step ensures the prop to follow the motion of the bone)
Click the button, in the coming dialog box, make sure the target bone node is picked and check Align to Parent box. Click OK to confirm.
Repeat the steps to attach props piece by piece till the actor is completed.