Original: Knights and Dames Grand Cross use the post-nominal '' GCMG '' ; Knights Commanders and Dames Commanders use '' KCMG '' and '' DCMG '' respectively ; Companions use '' CMG '' .
Simplified: Knights and Dames Grand Cross use the post-nominal '' GCMG '' . Knights Commanders and Dames Commanders use '' KCMG '' and '' DCMG '' respectively .