Your add-ins should create no delay in Outlook shutdown that is perceptible to the user. Compare the time it takes for Outlook to shut down with only your add-in running, and the time it takes for Outlook to shut down without any add-ins running to identify any significant difference.
Reportable Event: A Reportable Event is a process (with an associated IRB form) used by an investigator to report any problem or event or other act or omission to the irb.
IRB - Human Participants Committee Responsibilities IRB Functions. Federal and state regulations mandate that research involving human participants must be reviewed and approved by an Institutional Review Board (IRB) provided for in its assurance filed with the Office of Human Research Protections and will be subject to continuing review by the IRB.