How to create a Shadow of the Colossus climbing system?

Hi, I want to know how to implement a climbing monster system just like in Shadow of the Colossus, where there are specific grab points (fur) for the player to grab and climb, but don’t know if it is done by setting up sockets on the monster skeleton, attaching the player to the monster mesh, by collision boxes, sphere tracing or anything. I’m lost. Can someone who knows how this process is made give me information about it, and if possible, post a picture of a blueprint system? Thank you.

I would like to know how to implement this also. Anyone found out yet?