Means that an Info Request has been created, but has not yet been sent to the applicant

Means that an Info Request has been sent to an applicant/target person, but has not yet been returned/completed

Means that an Info Request has been completed by the applicant, has been returned to you and is ready for you to review and finalise

Means that an Info Request has been returned by the applicant, and you have reviewed and 'closed' the Info Request (it is finalised)