How to assign a cost center to a person without Position?

Dear Experts,

OM and PA is integrated.

When I hire an employee to position 99999999, the cost center field in infotype 0001 is an output field, can't be manually maintained.

I wanna assign an cost center to this employee in infotype 0001, not 0027 or 0315 or else, what to do?

Is it configurable?

Thanks!