In our standard Incident template there is a field named "Email Id(s) to Notify"

I have 2 questions about this.

1) Is it possible to report on this field?  I cannot find an option in the fron end reporting module

I'm trying to find out if anyone uses this function, so I'd need the report to show all tickets where this has been filled in, and ideally the name of the technician that logged the ticket.

2) The behaviour of this field seems to change based on whether the person filling out the ticket is a Requester or Technician.

For example, as a Technician, when I start to type a name, it give me autocomplete suggestions.  There is also a lookup button where I can bring up a full list of requesters.

However, If I use the same field in a Service Item, when a Requester tries to fill out this field, there is no lookup or autocomplete options.

Any idea why this behaves differently?