Your customer has read about a feature in OnGuard for OnGuard Persistent Agent and Agentless...

Policy Manager > Configuration > Enforcement > Profiles > Add a new profiles with Agent Enforcement as the template, and on the Attributes tab add the new Show Posture Results in Guest Page attribute and set the value for the attribute to true.

Policy Manager > Configuration > Enforcement > Profiles > Add new profile with Aruba Radius Enforcement as the template, and on the Attributes tab add the Aruba-User-Role configured with the captive portal profile mapped with default Posture Check web page URL.

Policy Manager > Configuration > Services > Edit the Web-base Health Check Only service, and on the posture tab under Remediation URL add the default Quarantined Blocked web page URL and complete the service configuration by hitting save.

Policy Manager > Configuration > Services > Edit the Web-base Health Check Only service, and on the posture tab enable the checkbox for the new option Show Posture Results in Guest Page and complete the service configuration by hitting save.