Different account assignment and different freight G/L

Hi All ,

While creating PO for account assignment K and S user is giving FRB1 freight condition 

while doing GRN its picking a G/L which is assign in obyc in FR1 key

Now finance requirement is to differentiate the freight cost which is coming via account k and respectively   ( ie overhead freight and project freight G/L  separately )

So my query is how can we give two different G/L for FR1 under same schema which can be picked for K and S individually

or can we create fr1 with different name in same condition schema so that can give as per requirement and which pick different freight g/l in OBYC

Thanks