Clipper801 was probably asking if there's any minimum requirement that it has to be spend on CX/KA metal. Which is...
only 1 sector required, regardless of elite level.
https://www.cathaypacific.com/cpa/en.../mpo/clubmiles
Members of The Marco Polo Club are required to travel at least one eligible sector on Cathay Pacific or Dragonair per membership year in order to attain or retain Silver, Gold or Diamond status.