How to set two filter in a dropdown field in aras

Dear All,

If I want to Set two filter in a dropdown field then how it will done by filter list concept.

1st field : Project Name    (FilterList1)

2nd Field : Department     (FilterList2)

3rd Field: Similar Project Name. (Result)

Now 1st field is 1st filter and 2nd field is 2nd filter. Project Name Data Type is "string" and Department Data Type is Classstructure.

So Can you please share solutions if any body have.

Thanks in Advance

Abhishek Srivastava