Pay Items in Voucher in Expense Management Reimbursement Process

Hello,

When running Expense Report Reimbursement Report (R20110) it creates a voucher with pay item(s). The number of pay items depends on how many Expense Categories have been used while creating Expense Report. Simply, if two expense categories have been added to the Expense Report, then two pay items would be appeared in Voucher (P0411)

Can you please suggest how to setup to create one Pay Item in Voucher per multiple Expense Categories?

Thanks