Payroll Helpline number design on payslip pe51

Hi Payroll Gurus,

I have a client requirement to update helpline number on the payslip. The number that currently exists on the payslip pe51 design is a number that is in the window section of pe51 and is literally written over there. How do I remove that and make that number base on payroll area (i.e payroll area AX will have the number 08003567856, payoll area BX will have the number 08003561234).

Please help..

Many Thanks