Calls for Scotsman to enter totals (7)
I believe the answer is:
summons
'calls for' is the definition.
('summon' can be a synonym of 'call for')
'scotsman to enter totals' is the wordplay.
'scotsman' becomes 'mon'.
'to enter' is an insertion indicator.
'totals' becomes 'sums' ('sum' can be a synonym of 'total').
'mon' placed into 'sums' is 'SUMMONS'.
(Other definitions for summons that I've seen before include "Call (to court)" , "Order to attend court" , "Subpoena" , "Calls to appear" , "Order to appear in law court" .)