The red guy is probably not a chess player. He moves his knight like a bishop, so Magnus coaches him a little. It was just a publicity stunt, and the red guy is making the moves that the country of Norway voted for...
Why is Magnus telling his opponent where to move his piece
A late response, but this is a clip from Magnus Carlson vs Norway. It was like vote chess. 3 Norwegian chess players came up with three alternative moves, and the rest of Norway voted for one of these three.
The man in red did the moves represented by Norway, but did not have that great chess experience.
https://www.youtube.com/watch?v=2iS4jeczEaA
go to 0:23 he is playing Norway here and the red guy is representing norway....it seems like Magnus tells him where to move the knight...strange?