Clearer spotting of special requirements of clients in appointment book

We use tags to identify clients with special requirements such as downstairs rooms / needing a ramp putting out / having special payment terms etc - However, this can be hard to spot among all the tags of all the people in the calendar. It would be handy to have a simple way to identify people with special requirements that CA’s need to be aware of at a glance at the calendar - could we maybe still use the tags for details but maybe have a tick box in the client profile which says they have special requirements which then triggers the calendar appointment to show an obvious flag (maybe even an icon like a red flag ?)