How do you pick CK, FK, PK?

[cgeorge]

I have 2 MC who are my weakest players (not by much) but I play them 1 for FK and 1 for CK.

A lot of goals have come from FKs being tipped over the bar then scoring from the resulting CK.

Best players over the seasons for these have been MC or AMC

[Tomajko]

I set the playmaker SA for CK (+train his passing+crossing skills stats) and assign shadow striker SA for the FKs (train the shooting and finishing skills).
Much better results for me than the FK SA+CK SA players.