I assume you mean for the interview stages of selection?
Look at which airlines have alliances with said organisations and look for any news relating to those in particular. But other than that keep your eyes in the news and Im sure you'll be on the pulse.
It never came up with Cabair, and I have no experience with OAA or FTE, but CTC absolutly grilled me on their partner airlines, which aircraft they operated and how many, bases/hubs etc. Unfortunatly in this respect, I was completly unprepared and I think it was the main reason I didnt proceed to the next stage of selection
Nevermind, you learn from your mistakes. Hopefully you can learn from mine airbuslit.
Good luck, PM me if you want any info on the Cabair selection process
JB