how to set up expense management

We are on E9.1 using Expense Management.  I am looking for a solution to allow me to have one expense category and allow it to be sent to more than one account.

i.e   AIR  -  BU = IS   Account   8210   SGA

       AIR   -  BU =IS  Account    6100  Direct

Will I need to set up a separate category to allow the account number for different groups ....

i.e   AIRD   Airfare - Direct     6100 

       AIRS   Airfare - SGA       8210

This will make it very confusing for the employee to know which category to choose.

Thanks