where is matte shadow or shadow catcher ?

[guigui441987]

Hello,
i'm looking for create a plane and match shadow on a plate in background like in this picture. this guy turn on the "matte" field and in his "environnement HDRI " he turn on "Imp. Samp"
But in this tutorial it's a old version of the plugin c4d. in my version the diffuse material no have "matte" channel.

So where is the field "matte" in the version 2.25 R4 of octane now ? or how can make "shadow catcher" or "matte shadow" like that ?

link of tutorial is there and look at 9 min 25sec thank you guys :

https://www.youtube.com/watch?v=I5zkqtn-Xn8

[underworldtr]

Hi
That's right there..

[guigui441987]

thank you