MeetingHand provides some useful information about the authors and the abstracts at the Abstract Edit page.
Submitted By: The name of the participant who uploaded the abstract. You can see the participants profile by clicking the name.
Submitter Registration Status: You can also track the payment status of the participant.
Topic: The topic/track selected by the participant during the abstract upload.
Presentation Type: Presentation Type selected by the participant during the abstract upload.