hi i want to ask what is the criteria of group preferences at the time of css interview does one need to prefer according to marks one got in written exam and seat allocations in punjab suppose if one got 600 plkus in written i think one must opt for omg rather pas in his top priority isnt it it is muddling me

how many groups one can tick in his preference list at the time of viva voce are they just 2 or three or 12