The Deviations are managed by clicking on Tools -> PHA -> Deviations Manager.
In order to conduct a PHA study the Deviations (Parameters and Guidewords) should be configured for the type of study.
By default PHA Comp is configured with default Deviations for a HAZOP.
Click on ?Add New? to add a new Deviation or right click on a Deviation to edit or delete that Deviation.
Note that each Deviation must be unique, and a Deviation that duplicates an existing Parameter and Guideword can not be saved.
The Parameter and Guideword fields autocomplete based on previously entered data.