Buyer assignment based on rule Set name

Hello,

My client would like to have different Buyers assigned to a PO based on what category and smartform is used.

I see these are the standard criterias :

If Smartform X is selected and within this smartform Commodity A1 it should be auto assigned to Buyer C.

If Smartform Y is selected and within this smartform Commodity A1 it should be auto assigned to Buyer D.

What would be the best way to implement this appart from duplicating Commodities with the name of the smartforms so that each smartforms contains specific categories ?

Is there, for example, a way to use the Rule Set field in these rules to put the name of the smartform and each smartform uses his own rule ?