When I assign a case role to someone it seems like CiviCRM allows/requires me to search through the whole contact database. As there might be many matches for a search string it takes extra time to ensure that the one I assign is really the one I intended.
In my organization only a few persons are actually possible targets for such an assignment, as I assume is the case in most constituents, thus only a few in the contact database should be possible to select on e.g. assignment of case responsible.
Am I missing some configuration to make this happen? I know about permissions (which I so far have had no need for, "normal" contacts don't access our CiviCRM), are they related to this?
On essence, I want the contacts to be searched when assigning a case role to be limited, e.g by a group, so a match can be found quicker and more unambiguous. How do I do that?