Are you still having difficulty with this? I notice you didn't receive a response - it may be that the post was best suited to a ClearPass discussion area.
Are you attempting to have a guest access service with a captive portal that does not require login? Do you want to display terms and conditions or something else? It's not entirely clear what you would like the outcome to be - I do understand that your customer does not want to use the Guest User Repository but understanding why would be useful to help find the outcome you are seeking.