unable to view unassigned requests

Hi;

We have a need to restrict access to certain requests (of sensitive nature).

I have looked through the service desk feature list and apparently this is in the backlog.

In the interests of trying to get this to work I switched on "All in group and assigned to him(requests only)

in the Role configuration screen.

This has the unfortunate side effect of not allowing technicians to see unassigned requests, even when they are allowed to see all groups (including the group I was trying to use to restrict viewing access).

Is there anything I am missing to allow viewing unassigned requests and still have the "all in groups setting" set?

regards
Alistair