Apologies, let me try to explain better.
In short - we want to allow users to register and manage their devices (no cert onboarding necessary), we don't mind which page we use for that but we want to be able to edit the page (just some simple changes to links). There seem to be a number of options/interlinked pages, none of which I can work out how to edit!
At the moment visiting /guest gives non-admins (decided by AD group), the Device Registration sso-role. They are redirected to /guest/mac_list.php. I've attached a screenshot. I think this is set in Guest -> Administration -> Operator Logins -> Profiles 'Device Registration'. That's where we are at the moment. The issues are that on this page there are links from our logo (top left) and the 'Home' item in the breadcrumbs menu that take users to a page called 'Unified Visitor Management'. And another issue is that clicking 'Devices' in the lefthand menu takes you to /guest/mac_index.php.
It's these links that are the problem because they take you to pages that we can't edit (or I can't find how to edit). If we could edit these pages then they would probably be quite useful (in fact we would probably use either of them as the landing page for people visiting /guest (assuming that is possible).
So the question is how can we edit these pages? And if we can't edit either the Unified Visitor or /guest/mac_index.php pages then how can we remove the links to them from the /guest/mac_list.php page? (We would also need to remove those links from the 'create' and 'edit' device pages).
It feels like pulling at spaghetti!