Twist Grip Dual Handles
Watch this video from DJI on how to setup the Twist Grip Handles:
https://www.youtube.com/watch?v=zyyGK0-0rPU
The kit does not include the Tethered Control 
Handle. 
You must remove the rubber protector from 
the front of the gimbal to mount the arms. 
Mount the arms on their correct side. 
You can use one or two handles in conjunction 
with the hand grip.