Yeah that's what I don't understand - what attaches to the bracket?

So, I called them this morning, and was told that any handsfree kit should attach to it. Which confuses me, as my kit (which is very popular, the CCM Roadster seen here



Has no mounting holes on the back. I spoke with literally FOUR people there and none of them had any idea what handsfree kits might work. They just kept telling me to look on their website for installation instructions. Then I was "put on hold" (they put the phone down), left there for 10 minutes, and then hung up on. Two or three of the people I spoke with were at least 60-70 years old and had no idea what I was talking about. I give up - anyone else want to try?