Cheers Pete do they install all of those clamps when it gets to the ISS ?
Seems like theres loads
The photo shows docking hooks. Hooks are engaged in unison. There are an active set and a passive set on each spacecraft.
Clamps are installed by the crew and are affixed to the vestibule between the spacecraft. These are not shown in the photo.
No, that is incorrect. The hooks are a separate system entirely - they are contained inside the docking collar, and are electrically engaged post-docking. Hooks are what hold the two spacecraft together, and as you said, there are hooks on both sides of the docking interface (active & passive).
The clamps (which are shown in the photo) don't hold the two spacecraft together on their own, they just rigidise the linkup. You are correct in that the clamps are installed manually by the crew around the vestibule.
That's why the MRM-2 hook issue required cable re-routing to solve - because the hooks couldn't be accessed by the crew.