I applied online. I interviewed at Copa Airlines (Panama City) in Aug 2017
Interview
Day 1: Off. Day 2: Advanced compass test and interview with HR and chief pilot. Day 3: Sim check. Day 4: Polygraph test and you are back to the real world
Interview questions [1]
Question 1
Why Copa Airlines? The entire question bank it's at latestpilotjobs.com if you buy the subscription for the interview prep, which I strongly recommend it.