Add new column in Application

Dear experts

I need Modifify the layout for the application that use the component HRESS_CC_GUIBBL_PTARQ_TIMEACC " View Time Account Balances".

The requirement is add new column.

How can add news columns? The columns that I need display are:

Information of the Infotype PA2006-ENDDA that not appear with the layout delivered by SAP.

Information of the Infotype PA2006-KVERB that not appear with the layout delivered by SAP.

Beside, I also need show a column new

ColumnNew = PA2006-ANZHL - PA2006-KVERB

Thanks in advance,

Regards

Carmen G