I understand from CX's website that it's possible to redeem Asia Miles for lounge access. I know, not the best use, but I have family flying LAX-HKG-HKT in Y in August, and I'd like to treat them to the lounge during their layover. I'm not traveling with them. CX suggests the redemption can be done for oneself or for others, but also says it can be done in person at HKG. Since I'm not traveling, does anyone know how this works logistically? Do I do it online and get some kind of voucher I give to my family? Is it an electronic record somehow? Appreciate any info/help/advice.