How to Default from Position and Assignment objects while creating/editing a job requisition in VBS?

Summary: We have approved use case to default Organization, legal employer and Business justification based on Position. We would want to know how we can Default from Position and Assignment objects while creating/editing a job requisition in VBS. Is it supported from 25C? If so, how should we write the rules for the same?

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We have approved use case to default Organization, legal employer and Business justification based on Position. We would want to know how we can Default from Position and Assignment objects while creating/editing a job requisition in VBS. Is it supported from 25C? If so, how should we write the rules for the same?