How to Add Fields and Data to JOB Data that Won't Impact Payroll Processing

We are using, Peoplesoft HCM - PUM Image 46, and are looking for a means to populate some additional data, ideally on JOB data.

Some of the fields would be similar to a building name/number or more specifically a desk number.

We would also want the capability to add/update these fields without them impacting payroll processing.

If anyone has done anything like this, we would be interested in understanding how you implemented such a process or what you did to add the fields and where you add them.