How do I make a Requisition Field visible and required depending on recruiting type

Summary:

We currently don't show the Business Justification field (Basic Section) on any of our requisition. We use 4 different recruiting types (Requisition Structure Section) Recruiting Types = College, Craft, Confidential and Non-Craft

We would like to make the Business Justification field visible and required, but only if the recruiting type is 'Non-Craft' or 'Confidential'.

How can that be done?

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