Vibrating Oculus Touch Controllers

Hello all

In my scene you are in front of a desk with a phone in your hand (attached to controller).
The phone begins to ring 5 seconds after the scene is loaded. I have a script that tells the audio source when to play.
I would also like the touch controller to vibrate as the phone rings.
Has anyone implemented anything similar and would offer some help/advice?
Found a paragraph about it on the Oculus website but it confused me a quite a lot
Maybe someone has a simpler explanation? Maybe not.

Any help is appreciated

Henry