What judge has to do in total (3,2)
I believe the answer is:
sum up
I believe this clue is a double definition.
'what judge has to do' is the first definition.
(a judge sums up at the end of a trial)
'total' is the second definition.
(I know that total can be written as sum up)
'in' acts as a link.
(Other definitions for sum up that I've seen before include "Recapitulate (in court)" , "Money more than before" , "Conclude" , "What judge does for jury before they retire to consider verdict" , "Recapitulate (as for jury)" .)