You have to solder wires to the sda, scl, 5v+, and ground in the area labelled dog2. Then to the corresponding locations on the bno085. It needs power and Comms thats it.
Unless you already have a strip already in there, then some dupont wires would be a quick fix.!
zoom way in on the pic (not the best) , I have wires left to right in the 6 connections in the dog 2 area; GND, empty, empty, SCL, SDA, 5V+
The bno085 now resides on top of the remote and implement opto isolators with double sided tape.