Best way to stream music to Gold Phantoms

[pvanosta]

I have a question for a friend with a pair of Phantoms who wants to join the world of Roon.
(I use Roon on a NUC to a Devialet expert pro 440 myself and am a happy user of RAAT on my Devialets).

Running Roon on a NUC to a PAIR of Phantoms (let's assume they are RAAT capable).
In the Roon Remote, if it behaves like mine, I will see Devialet RAAT and Devialet Airplay options.
Enable RAAT.

Now the question: do I need to do anything to make the Phantoms behave like a stereo pair (L and R)?
Sorry if this a n00b question.

As long as the speakers are paired in the Devialet app, they show up as a pair in Roon.

Thank you. Follow-up question if I may: if I wanted to stream from the NUC, using RAAT, but I wanted to do it WIRED (ethernet), would I connect EACH phantom to the switch/LAN that the NUC was also wired into?