Two video cards, two (independent) Photon sessions

I’ve seen some information on running Photon on dual monitors. I take that to mean that one Photon session is split across two monitors. I’ve also seen evidence (QNX knowledgebase articles) that this is a new feature, previously (v6.0.0) not supported.

I’m not trying to get one Photon session to use two monitors. I want to run two independent Photon sessions each using a different monitor. Can this be done as of v6.2.1?

Any advice on how to acheive this? ph options, PHGFX environment variable, specific video cards to use? How is input (mouse, keyboard) handled?