In dnb 6 yrs course

In dnb 6 yrs course.

Is it like 1st 3 yrs we’ll do general surgery and next three years will be in neurosurgery/ctvs/ped surgery dep.

Or all 6 yrs in single department?.

Please guide

9-12 months gen surgery
5 years that particular department

2 year for Gen sx nd after that concerned department