Echo Arena Grip Style

Hello there!

I have been doing some research into Virtual Reality development and I have been playing some Echo Arena with my Rift. Does anyone know of a way to grab an object like you grab the object in that game as it is similar to what I am trying to achieve yet I have no idea how I would go about it. Someone showed me this GDC Vault - It's All in the Hands: VR Animation and Locomotion Systems in 'Lone Echo' yet i’m not sure where I am meant to be looking at!

Thanks in advance!