Are there any instrutions on how to install this?

I looked on Google though I'm not sure, have yours fallen out.... Why would you want an answer to this question?

Really? Watch this... around 1:04



And get all of your P4 Accessories from the DJI Store

I saw this as a new part in the DJI Store and thought this was a part for a more stable Gimbal when flying.   I guess it is a replacement part for the one it already has?

It is not recommended to disassemble the drone by users. Attempt to disassemble the product will void your warranty.

DJI-Paladin Posted at 2016-4-12 00:23
It is not recommended to disassemble the drone by users. Attempt to disassemble the product will voi ...

Thank you,  I did notice this part is no longer on the site for sale.  I would like more of an explanation but sure....despite being quite good at building and repairing electronics,  It is not my desire to take apart this new wonderful Machine and void my warranty.
At this point I do feel like a complete idiot to have spent money on this accessory!
And.......I am hoping someone   in sales is not laughing too hard!   
Hope you get my point,