Product design question

How would you add an edit option in the application for HR_admin user only for leave details of a particular staff member?

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What this question tests

Tests precise, permissions aware feature design: scoping an edit capability correctly to one role without breaking existing access controls.

Clarify the requirement: only the HR admin role can edit leave details for a specific staff member, others should retain view or no access.
Confirm existing role definitions and permission structure in the application before designing new access logic.
Propose the design: a role check gating an edit button visible only to users with the HR admin role, with an audit log of changes.
Address edge cases: what happens if an HR admin's role changes mid session, and how conflicting edits are prevented.
Define success: zero unauthorized edit attempts succeeding, verified through access control testing.
Confirm with the interviewer whether this needs to support multiple HR admins per staff member or a single owner.

Scopes the edit permission precisely to the HR admin role, with the button and API access both gated, not just the UI element hidden.
Proposes an audit log capturing who edited what and when, since leave data changes need traceability for compliance and dispute resolution.
Addresses the edge case of concurrent edits or stale sessions, ensuring a role change or session timeout is re validated before an edit is accepted.
Sets a validation step, testing that non HR admin roles genuinely cannot edit via the UI or a direct API call.

Hiding the edit option in the UI only without enforcing the same restriction at the API or backend level.
Ignoring audit logging, which is important for accountability when editing sensitive leave records.

How would you prevent a non HR admin from editing via a direct API call even if the UI hides the button?
What would you log to support a dispute about a leave record change?