Restricting payroll staff from editing their own PA30 Master Record

I have been asked to restrict the payroll staff so they cannot edit their own master records using PA30, but leaving them with the ability to edit all other staff.  Any suggestions on how to make this happen would be greatly appreciated because I have searched for the answer, played with P_Origin, P_Orgxx, and P_Pernr with no luck, or is this even possible?

Thanks in advance,

Jenn