An Investigator is an Investigator with no ability to create other internal system users. They can only view and update Candidates assigned to them or shared by other Investigators. Investigators can add Candidates to the system and manage all aspects of the investigation including inviting references to the system to complete questionnaires. This is a good role to assign to an Investigator who simply conducts investigations assigned to them and manages their own caseload. If you have external contractors conducting background investigations, this is an excellent role for them.