Abhijit,
You have this in SPRO
Advanced Planning and Optimization - Supply Chain Planning - Multilevel Supply & Demand Matching (SDM) - Capable-to-Match (CTM) - Define Special Sorting of Descriptive Characteristics
Under this you define sort criteria for required field. In this you define sort item along with its value.
I hope you will be able to customize the same.
Regards
Rahul