The Mass Hire Candidates form shows the system Candidate Hire form fields to external candidates, and the system Internal Candidate Hire form fields to internal candidates. Position Management fields are shown when applicable. The system forms aren't customizable, but they do adjust which fields are shown to candidates based on their pay group, such as whether the marital status, citizenship, or national ID number fields are shown.
You must add the Mass Hire Candidates form to Workflow Administration > Role Privileges, and it must be assigned the Candidate Hire parent feature. The Mass Hire Candidates option is then available in the Hire list in the Candidates tab. See "Associate Forms with Workflows" in the Self Service Guide.
To optimize the mass hiring experience, it is recommended that users select the Send Pre-Hire Questionnaire Automatically checkbox for job requisitions where mass hiring would be useful. Otherwise, the pre-hire questionnaires will need to be sent manually to each candidate before they can be hired, either from the Candidates tab or the Ineligible Candidates tab of the Mass Hire Candidates wizard.