Greg at Pixel Fondue also has some amazing Octane videos that show the process of setting up the UI in modo and more.

Find them in the Octane Playlist here:
https://www.youtube.com/playlist?list=P ... dTw9PGdTRp

Maybe they can improve the new workflow then. Currently to add a "Shadow Catcher" there are many steps and lots of Nodes. As seen here: https://youtu.be/Sv-RauFXYWQ

versus the old Shadow Catcher workflow- https://youtu.be/DmGpuZIdDUk

As I understand it, the shadow catcher is still available for backward compatibility, but isn't being further developed. AOV groups give you more control than the shadow catcher.

Im currently using AOV groups but having the Shadow Catcher toggle is quicker and I would think, could support light ...

New Videos added:

Modo | Octane Render: Contact Shadow using Black Layer Shadows AOV
Modo | Octane Render: Composite Output AOV Layer Mask
Modo | Octane Render: Cryptomatte Mask Output AOV
Modo | Octane Render: Layer Shadows AOV and Black Layer Shadows AOV
Modo | Octane Render: Light AOVs
Modo ...

Having the Shadow Catcher feature respect Light Linking would be extremely useful. The Shadow Catcher currently overlooks any Light Linking.

Could it be a Preference that the user could choose?

You can access each of these videos from the Pixel Fondue Playlisthere:
https://www.youtube.com/playlist?list=PLv8HciXoFYX9fGjqG0E4MwydTw9PGdTRp

I thought having the titles posted here would help in a forum search.

Enjoy!

Modo | Octane Render: Masking with Weight Maps
Modo | Octane Render: Color ...

Love these Presets!