As cobaltit mentioned, unfortunately this is not possible from this page. However, there are some other alternatives. It looks like you are looking for real-time options, but let us first note that a unique ID is available in the CDR files. However, to get this unique ID in real-time, the only option that comes to mind is via the 3CX Call Control API by subscribing to events, or via a 3CX Phone for Windows plugin. There are no easy options.