Staff classifications and the mapping between category and sub-category is described in the document: Staff Classification Guide. To help establish the correct staff classification for your post use the Staff classification tool
Staff requests
Staff classifications are assigned at the staff request stage of the appointment process - How-To guide - Create and approve Staff Requests. If basing a staff request on an existing post be aware that historical data anomalies are present in posts within PeopleXD - check that the staff classification is accurate and complies with the guide every time you raise a staff request.
Check staff classification validity
Classification validity can be checked for permanent, fixed-term, open-ended and variable hours contract by running the HRINFO01_Data Quality Validation report monthly.