All Threats may contribute to all Events. In most cases, particularly when the hierarchy represents a broad range of organizational/categorical threats, threats may contribute to only some of the Events. It may also be possible that an event won't have any Threats. You can specify which covering threats contribute to each of the Events on this page.
You can set up which threats contribute to events on the Vulnerability Grid (Contributions) page which can be found on:
- IDENTIFY/STRUCTURE > THREATS > Contributions, or
- LIKELIHOOD OF EVENTS > STRUCTURE > EVENT THREATS > Vulnerabilities Grid
Clicking on the row/column heading boxes will select/de-select all of the elements in that row/column.
A 
box in a column or row header means that all cells in the column or row contribute.
A 
half box means that some but not all contribute.
A 
blank means that no cells in the column or row contribute.
You can click on specific boxes to assign contributions for the Event (row) given the Threat (column).
