Our helpdesk is for an internal set of customers and a metric we would like, though not very ITIL, is frequent "callers".
By this I mean we want to quantify the number of Incidents reported by a given customer in a given time period.
Also, similarly, we want a report of top 5 or top 10 customers with respect to number of Incidents logged.
I don't see any built-in way to do this sort of thing. Any ideas on how to create it?