The History tab captures an audit trail of changes to schedules.
To view schedule history:
Field—Lists the field involved
Modification Type—Indicates the type of change: Created, Changed, Added, Removed
Modified On—Date of the modification
Modified By—User name who modified the field
Old Value
New Value
Setting Schedule Properties
Adding Instructions to Schedules
Assigning Schedule Viewers
Applying Schedule Attributes
Adding Day Labels
Working With Schedule Rules
Viewing Schedule History