How to omit personnel numbers for py run

Hi,

I have a scenario where i shud not process some pernrs for the payroll run. There is an option to enter the pernrs that shud not go thru the payroll run. My qn is that if i have to omit say like 100 pernrs, do i have to manually enter all the pernrs?? Or is there some table/internal table which can be populated with all the pernrs for which i need not process the payroll?