I have had a look at that family light. I was unaware of it's existence (and non of the beta testers were using it). It has no geometry (and no materials), so there is no way to set it up as an Octane emitter. Octane is designed to provide physically accurate renders, to achieve the highest level of realism. So it does not cater for light appearing from nowhere - it has to emanate from something (ie. geometry). Interestingly, I found some screenshots of the old Revit 2012 Studio Light - and it looks like it contains geometry - but certainly the version you sent me does not.
Ideally all scene lighting should come from the sun, the environment (IBL) or light fittings (ie. light globe geometry). However I understand that to get noiseless renders you might want fill lights (which is effectively what the Studio Light is). Octane emitters work best when they are 1 single flat polygon - as large as possible.
There are 2 options:
1) Enhance the plugin so that if you select a Studio Light, it gives you to options to construct scene geometry in place of the Studio Light which the Octane plugin can use as an emitter. This would result in a high-poly sphere - which is not the ideal emitter construction.
2) You add a flat plane to the scene (this is explained in the on-line manual somewhere, but I suspect you'll know far better than I the best way to do this), and set an Octane emitter up for it's material. If you have the plane as a reuseable family, you can set the material up as "Octane Emitter", and then in the octane plugin setup the material as per the above screen shot, and then "Save as Default" - so whenever you load that emitter into the scene - it will automatically pick up the Octane emitter material. Potentially the plugin could come with this family object.
I hope all the above make sense.