Hi @Gaurab_Ghosh, welcome to our community
At the moment, our team is focusing on AQL Expressions development ( [Upcoming] Our brand new Analytics Query Language, AQL! - Product Releases - Holistics Community) so we have decided to stop enhancing capabilities for Business Calculation.
AQL Expressions are more powerful than Business Calculation so all of its use cases are expected to be covered with AQL.
You can refer to some of our documentation about AQL for more information ( Percent of Total | Holistics Docs).