From this dialog you define rules for what you consider as a disruption.
Name
Mandatory
Shortcode
Mandatory
From
Roster filter specifying what was assigned
To
Roster filter specifying what it was changed to.
Diff type
Ignore
Ignore difference values
CI
Difference to Check In
CO
Difference to Check Out
CICO
Difference to Check In and/or Check Out
DS
Difference to Duty start
DE
Difference to Duty End
Diff value
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
Time Span
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