Originally Posted by Guy Betsy

Yes you first get a KF account.

Then through PPS/ KF registration, you put in your preferred FFP in your account. So whenever you fly you just need to give them your KF number which will automatically link to your preferred FFP.

On your BP you will see something like :

SMITH / JOHN MR
SQ00123456789 K
UA*G

That means that your flight is registering you're crediting your SQ revenue to KF/PPS and your flight miles to UA MP ...

Once your qualify for PPS, the above 'K' will change to 'P' or 'G' (I think cos it has been a while since I was PPS.. )

SQ's Kriscom (their GDS) system will automatically search out your name when you do any booking - either online or through a OTA, and even if you don't put in your FFP, SQ will automatically append your KF number to your booking if your name matches. So its good if you can do the above - and register your preferred FFP with KF/PPS.