Chiss and allies are all welcome to Martel's induction as Imperator. Link is here. Unaffiliated Indies, GA, and Jedi Characters can have reactions while watching the holonet since it's broadcasting there but they will be unable to be at the actual event.
Would Arkel be high-ranking enough to recognize the Immortal dress uniform that Nasiri's wearing, and therefore identify her as a member of the order? Need that info for my post