I agree that this is very unclear in the documentation & tutes to date from Steinberg; I suspect we ‘may’ see some advance on this in a future update; perhaps is already built into N11 & that the Dolby Atmos engine is licensed by Steinberg - at least it looks that way by comparison of the various IO to the original Dolby suite. Pure conjecture on my part though.
Here’s where I got to so far:
By comparison, Pro Tools Ultimate requires the additional purchase of the US$299 Dolby Atmos Production Suite. A one month iLok trial can be downloaded from Dolby
Some threads elsewhere claim there are significant differences between the $999 Mastering and $299 Productionsuites, but as far as I can see, it is only the Mastering suite that is required for the various rendering duties - including a binaural bounce (meaning, not Ambisonics - which I am after as well).
I have it here now & seems to work well & as a standalone application. On macOS Catalina at least - presently destroys Big Sur because of the kext issues; unsure about Windows. It is also bundled with core audio or asio drivers, & this provides a way to incorporate within a DAW, but also requires the Dolby Atmos panner. More about that here in the release notes
Still, by bouncing out the ADM from Nuendo as it stands now, this can be loaded, monitored and rendered from the standalone Dolby app - including a very nice binaural mix as well as any number of any other delivery formats. Yes, costs another $299.
So let’s hope we hear more clarity about all this from Steinberg in the near future. Personally, I don’t really want to have to spend the extra $$ for yet another app and workflow, and especially in light of the ‘pro’ status /price /target market of N11. As above, perhaps there are just a few ‘switches’ yet to be enabled in the Steinberg Dolby engine?