As per floated advertisement, first 62 in the merit list of Punjab JIOs declared by NTS will be appointed ( if NAB does what it says). Remaining 15 open merit seats will be distributed among meritorious candidates of all provinces irrespective of their domiciles. Calculate it by filtering out the first 10 with highest score in test. Check their domicile and add punjab domiciled into 62 Punjab seats (you can say confirmed appointee). After that the game of luck starts, which plays in strange ways. Unwilling candidates and candidates with AD offers will certainly provide the chance to next candidate.