MIRO trx adding item position

Hi,

how adding in MIRO an item position for unplanned costs?

I woul like giving to users the possibility to post the above costs

in <b>two ways simultaneously</b>:

-Unplanned delivery costs are distributed among the invoice items;

-Unplanned delivery costs are posted to a separate general ledger.

Is this possible or not? If not, is possible doing that with a specific FI trx?

Best regards