Thank you both for your info, Please comment on below options.
1) Enhancing structure 'HCMT_BSP_PA_XX_R0105' to include new fields - If I do, is there any BAdi to get and display the values for these new fields from another IT?
2) HRXSS_PER_SUBTYPE - Creating Dummy Subtype and Implementing this BAdi to get and display the values for these new fields from another IT?
...Naddy