From this dialog you define rules for what you consider as a disruption.
Roster filter specifying what was assigned
Roster filter specifying what it was changed to.
Ignore difference values
Difference to Check In
Difference to Check Out
Difference to Check In and/or Check Out
Difference to Duty start
Difference to Duty End
Specifies the tolerance in minutes - if time of roster event (i.e. check-in time) is changed by more than this value in succeeding roster - that would qualify this change as a disruption
Specifies the time in days - how long before the time of roster event (i.e. check-in time) can the roster be changed in order to avoid disruption. If roster is changed shorter ahead of its actual occurrence - that would qualify this change as a disruption
Valid from / to
When the rule is valid
See: Reference Information > Views > Human Resources > EASA Disruption Report