I'm a SAP Hana Certified + ABAP Principal consultant with over 7.5 years experience having major expertise in HANA, Fiori, ABAP,Archiving,ABAP-HR, ABAP-GTS , Business Intelligence (BI & BW) ,BPC,Workflows ,Idocs , and Forms.
BPC Skills : BPC BADI ( Experience in creating the Custom Logic BADI's for BPC for Planning Templates)
Based on the current it seems we can have logic written in the "EXECUTE" Method of BPC BADI.