EL Expression for Personal Details > Biographical Information DFFs

Summary:

EL Expression for Personal Details Biographical Information DFFs

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I have a requirement where my Customer wants to expose certain DFF fields in the Biographical Section for the Employee Role, but hide for another role, for example Human Resource Specialist via My Client Groups. I've tried all different ways using positive and negative conditions in EL Expression for roles, but with users that hold both roles there does not appear to be a way of achieving this result on the different pages. Unfortunately these DFF fields are not in Design Studio to create rules there by role.

Has anyone used an EL before on a global area that's designed to trigger only on a particular page? Any help would be gratefully received