I work on a configurator and need to supply a variety of masks. I think the most sensible way is to use G-Buffer IDs. I've set up my AOV write materials and I need to add them to the AOV materials tab in the render settings... but it only got three slots. I need way more masks. Applying the AOV Write directly won't really work because I need it to be object-based.
Why are there only three slots?
Can I add more materials?
Is there a better workflow?
I'm not that experienced with Arnold so I'd appreciate some support.