XC90 rear axle suspension questions

Hello all, I found yesterday the “Console, suspension suspension rear axle left” (acc. to Skandix) completely rusted through. Have attached pictures. The question is, is there a repair instruction or tips / hints for the exchange? Can I just unscrew this part and exchange it? Unfortunately, I found nowhere else, Vida also does not show me instructions how to exchange it. Thanks in advance! Many regards!