Separating values for two fields which is have same search help

Hi Folks,

I have one requirement like this. i have 2 fields in MM02 t-code. if i see F4 for those 2 fields it is showing 7 values in that search help. both fields are having same search help so that it is showing same 7 values for these 2 fields. but i want to separate this. if i click on the first fields then it has to show first 3 fields and if i click 2 field it has to show rest 4 fields. can any one suggest what to do for this. these 2 fields are not having search help exit and this one im doing in ECC 6.0.

Regards..

kanna