I wonder how complimentary Comfort Plus seat would work for my travel party of 4, and I am platinum medallion currently (but expected to reach Diamond next year with the program change).

1. How many of the other 3 passengers can receive free C+ seat due to my status?

2. If I am on my own booking, and the other 3 are in separate booking (different PNR but on exactly same flights), how would they get the C+ seat due to my status?

3. If all 4 of us are in the same booking, and only 1 of the other 3 can get C+ seat, how would this work in the same PNR? (can passengers in the same PNR be on different class?)